This document provides information about carbon compounds. It begins by defining carbon compounds as compounds that contain carbon as a constituent element. It then discusses why carbon is unique in its ability to form four covalent bonds and long chains of carbon atoms. The document separates carbon compounds into organic and inorganic compounds. It focuses on organic compounds, especially hydrocarbons. It discusses saturated and unsaturated hydrocarbons, including alkanes, alkenes, and alkynes. The document explains how to name compounds in each homologous series and describes some of their physical and chemical properties.
Organic compound nomenclature (ALkanes, ALKYL GROUP, ALKENE, ALKYNES)Tasneem Ahmad
for vedio click on this linkhttps://www.youtube.com/watch?v=ZzIxkWDlf5Q&feature=youtu.be
Organic compound nomenclature (ALkanes, ALKYL GROUP, ALKENE, ALKYNES)
The complete presentation on Organic Compound, IMPORTANCE, PROPERTIES, SOURCE, USED, Nomenclature Of Organic Compound
Organic compound nomenclature (ALkanes, ALKYL GROUP, ALKENE, ALKYNES)Tasneem Ahmad
for vedio click on this linkhttps://www.youtube.com/watch?v=ZzIxkWDlf5Q&feature=youtu.be
Organic compound nomenclature (ALkanes, ALKYL GROUP, ALKENE, ALKYNES)
The complete presentation on Organic Compound, IMPORTANCE, PROPERTIES, SOURCE, USED, Nomenclature Of Organic Compound
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
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Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
2. LEARNING OUTCOMES
• State the definition of carbon compound
• Identify different types of carbon compounds
• Explains homologous series
• Construct molecular formula and structural formula, and name the
members of the homologous series
• Describe physical properties of the compounds in a homologous
series
4. WHY CARBON IS UNIQUE
•Forms four covalent bonds
•Bonds covalent to: H, O, N, P,
S and all other nonmetals
(except noble gas)
•Carbon atoms join to form:
•Chain
•Rings
5. WHY CARBON IS UNIQUE
• Carbon can form multiple bonds to itself; oxygen and
nitrogen to give large variety of compounds
• The number of compound is so large that a separate
branch of chemistry – organic chemistry is devoted to
the study of these compound
• Carbon atoms able to form long chains of carbon atom.
This property is known as catenation
7. Carbon
Compounds
Organic Compound Inorganic Compounds
• Carbon-containing
compounds that can
be obtained from living
things
• Except oxides of
carbon, carbonates,
cyanides, and metallic
carbides
• Non-carbon-containing
compounds that can
be obtained from non-
living things
• Include oxides of
carbon, carbonates,
cyanides, and metallic
carbides
10. HYDROCARBON
• The simplest organic compounds:
• Containing only carbon and hydrogen
• It can be separated intro three main groups:
• Saturated
• Unsaturated
• Aromatic
11. Saturated Hydrocarbon
• Hydrocarbon that contain only single
bonds between carbon atoms
• The simplest class of hydrocarbon
• Called saturated because each
carbon atom is bonded to as many
hydrogen atoms as possible
• In other words, carbon atoms are
saturated with hydrogen
• Types of saturated hydrocarbon:
alkanes
12. Unsaturated & Aromatic
Hydrocarbon
Unsaturated hydrocarbon
• Contain double or triple bonds between
carbon atoms
• Types of unsaturated hydrocarbons: alkene,
alkyne and aromatic ring
Aromatic hydrocarbon
• Contain benzene rings or similar features
The saturated and unsaturated hydrocarbons
are often referred as the aliphatic
hydrocarbons.
14. Homologous Series
Homologous series has the following characteristics:
• Same general formula
• Same chemical formula
• Same chemical properties
• Consecutive members differ by one carbon atom and two
hydrogen atoms
• Physical properties that gradually change from one member
to the next
20. ALKANES
• Methane (CH4) is the simplest alkanes which 4 hydrogen
atoms are linked to the carbon atoms in a tetrahedral
• Instead of hydrogen atom, the carbon atom is further
linked to another carbon atom, we got another alkane
namely ethane (C2H6)
• General formula of alkanes: CnH2n+2, n=1,2,3
21. RULES FOR NAMING ALKANES
1. Find the longest carbon chain in the compound. This gives the
parent name of the compound.
5C
5C
3C
Longest carbon chain is 5: parent name is Pentane
22. 2. Number each carbon atom in the longest chain, starting
from the end nearest to the branch. This means that the
number appearing in the name is smaller number.
1
2
3
4
5
BRANCH
23. 3. Name the group joined to the chain and state the number
of the carbon atom to which it is joined.
2
Methyl group
2-methylpentane
24. 4. If the chain has 2 more identical groups joined to it.
Prefixes like di, tri, tetra are used to indicate the number of
groups present.
2
Methyl groups
2,4-dimethylheptane
1 3 4 5 6 7
No of groups
present
Prefixes
2 Di-
3 Tri-
4 Tetra-
25. 5. If a chain has 2 or more different groups joined to it, the
groups are written in alphabetical order i.e. ethyl before
methyl
2
Methyl group
4-ethyl-2-methylhexane
1
3
4
5
6
Ethyl group
28. PHYSICAL PROPERTIES OF ALKANES
• Colourless and odourless compound
• Dissolve in organic solvent
• Less dense than water
• Cannot conduct electricity
• Insoluble in water
• Low melting and boiling point: because the molecules
are held together by weak intermolecular forces
which can be overcome by small amount of energy
30. CHEMICAL REACTIONS OF ALKANES
• All alkanes have similar chemical properties because
they belong to the same homologous series
• Alkanes are unreactive; they do not react with most
chemicals
• They undergo two main types of reaction:
• Combustion (complete & incomplete)
• Substitution reaction
31. 1.a) Combustion Reaction (Complete)
• Alkanes burn in a
plentiful supply of air to
release energy (the
reasons why they are
used as fuel)
Gas
supplied
here refers
to alkanes
32. 1.a) Combustion (Complete)
• Burning (properly called combustion) also produces:
• CO2
• Water vapour (H2O)
• Heat
Lets observe what happened when you light a
Bunsen burner!
33. 1.a) Combustion (Complete)
1. Methane gas (CH4) exits
from the mouth of the
Bunsen Burner and mixes
with the oxygen gas (O2) in
the atmosphere
2. A flame is placed near the
mouth of the Bunsen Burner.
34. 1.a) Combustion (Complete)
3. Methane gas burns in oxygen
gas
4. The product of the combustion
are CO2 and H2O
5. Complete combustion blue,
non-luminous flame
35. 1.a) Combustion (Complete)
Writing a balance equation : complete combustion of methane
Word equation: methane + oxygen carbon dioxide + water + heat
Note: heat is always evolved from the combustion
Chemical Equation:
Step 1: write chemical equation
CH4 + O2 CO2 + H2O
Step 2: balance the equation
CH4 + O2 CO2 + 2 H2O
36. 1.b) Combustion (Incomplete)
Some important pointers on complete combustion
• When there is insufficient oxygen gas, incomplete
combustion occurs.
• Note: incomplete combustion also occurs for larger
alkanes (e.g candle wax C22H52)
• Its means that the alkanes is not burnt completely and
gives more sooty flame (orange-yellow in colour)
• The black soot is carbon and the yellow flame comes from
glowing carbon atoms.
37. 1.b) Combustion (Incomplete)
What happen if there is insufficient Oxygen?
The possible balanced chemical equation for the
incomplete combustion of methane gas is:
CH4 + O2 C + 2H2O [carbon only]
2CH4 + 3O2 2CO + 4H2O [carbon monoxide only]
4CH4 + 5O2 2CO2 + 2C + 8H2O [mixture of both]
38. 2. Substitution Reaction
• Alkanes react with halogens, such as chlorine and bromine, in the
presence of ultraviolet light (UV Light)
• For example:
Methane react with chlorine to form chloromethane and hydrogen
chloride gas.
CH4 + Cl2 CH3Cl + HCl
This is substitution reactions. The hydrogen atom in methane is
replaced by chlorine atom
39. 2. Substitution Reaction
• More hydrogen atoms can be replaced with chlorine atoms to
produce a mixture of four organic compound
40. 2. Substitution Reaction
Writing out entire sequence of reaction
• More hydrogen atoms can be replaced with chlorine atoms to
produce a mixture of four organic compounds!
CH4 + Cl2 CH3Cl + HCl
CH3Cl + Cl2 CH2Cl2 + HCl
CH2Cl2 + Cl2 CHCl3 + HCl
CHCl3 + Cl2 CCl4 + HCl
dichloromethane
trichloromethane
tetrachloromethane
41. Halogenation
• Reactions of alkanes with halogens
• Take place readily in sunlight/ultraviolet
• Example of substitution reaction
Reaction that occurs when one
atom or a group of atoms in a
molecule is replaced by another
atom or group of atoms
43. ALKENES
• Contain at least one carbon-carbon double bond (C=C)
• General formula, CnH2n (n= 2,3,4,…..)
• Classified as unsaturated hydrocarbons (compound with double or
triple carbon-carbon bonds that enable them to add hydrogen atoms
• For example:
C2H4 – ethylene
CH2=CH2
44. Naming Alkenes
1. Select the longest
continuous carbon
chain that contains a
double bond
2. Name the parent
compound octene.
Select it as the parent
compound
45. Naming Alkenes
3. Number the carbon chain
of the parent compound
starting with the end
nearer to the double
bond. Use the smaller of
the two numbers on the
double-bonded carbon to
indicate the position of
the double bond. Place
this number in front of
the alkene name.
This end is the
closest to the
double bond.
1
2
3
4
5
6
7
8
1 - octene
46. Naming Alkenes
4. Branched chains and other
groups are treated as in
naming alkanes. Name the
substituent group, and
designate its position on the
parent chain with a number
1
2
3
4
5
6
7
8
4-ethyl-1 - octene
The ethyl group
is attached to
carbon 4
47. Naming Alkenes
• A compound with more than one double bond
―Two double bond: diene
―Three double bond: triene
―Four double bond: tetraene
* Numbers are used to specify the locations of the double bonds
IUPAC names: buta-1,3-diene
IUPAC names: hepta-1,3,5-triene
1
2
3
4
1
2
3
4
5
6
7
IUPAC names: cycloocta-1,3,5,7-tetraene
48. Cycloalkenes
• Contains C=C in the ring
• Nomenclature of cycloalkenes:
―Similar to that alkenes
―Carbons atoms in the double bond are designated C1 and C2
cyclopropene cyclobutene cyclopentene cyclohexene
1-methylcyclohexene 1,5-dimethylcyclopentene
49. Nomenclature of cis-trans isomers
• Cis- two particular atoms (or groups of atoms) are adjacent to each
other
• Trans- the two atoms (or groups of atoms) are across from each other
Cis-2-pentene Trans-2-pentene
50. Physical Properties of Alkenes
• Cannot conduct electricity because no free moving
ions
• Boiling point and density:
―Most physical properties are similar to alkanes
―Boiling points of alkenes increases smoothly with
molecular weight
―Increased branching leads to greater volatility and
higher boiling points
51. Physical Properties of Alkenes
• Polarity:
―Relatively nonpolar
―Insoluble in water but soluble in non-polar solvent such as
hexane, gasoline, halogenated solvents and ethers
―Slightly more polar than alkanes because:
i. Electrons in the pi bond is more polarized (contributing to
instantaneous dipole moments)
ii. The vinylic bonds tend to be slightly polar (contributing to a
permanent dipole moment)
52. Chemical properties of alkenes
Combustion
(a) Complete combustion: produce CO2 + H2O
C2H4 + O2 → CO2 + 2H2O
(a) Incomplete combustion:
produce CO/C gas + H2O
C2H4 + 2O2 → 2CO + 2H2O
C2H4 + O2 → 2C + 2H2O
53. Hydrogenation
• Alkenes react with hydrogen at 180 °C at
presence of nickel/platinum (catalyst) to
produce alkanes
C2H4 + H2 C2H6
Ni, 180 °C
54. Halogenation
• No catalyst or ultraviolet is needed
• Alkenes react with halogen at room
temperature in the presence of
tetrachloromethane, CCl4
C2H4 + Cl2 → C2H4Cl2
C4H8 + Br2 → C4H8Br2
Used to test for the presence of a carbon-carbon double bond
55. Hydration
• Alkenes reacts with steam, H2O at 300 °C and
60 atm in the presence of concentrated H3PO4
(as catalyst) to produce alcohol
C2H4 + H2O C2H5OH
H3PO4
300 °C, 60 atm
56. Addition of hydrogen halides – HX
• Hydrogen halides: Hydrogen chloride, HCl or
hydrogen bromide, HBr
• Alkenes reacts with hydrogen halide, HX at
room temperature to produce haloalkane
C2H4 + HCl → C2H5Cl
57. Addition of hydroxyl group
• Alkenes react with acidified potassium
manganate(VII), KMnO4 to produce diol
compound
C2H4 + H2O + [O] → C2H4(OH)2
or
C2H4 C2H4(OH)2
KMnO4
Used to test for the presence of a carbon-carbon double bond
58. Polymerization reaction
• Small alkene molecules undergo an addition
reaction with one another at high pressure of
1000 atm and temperature 200 °C
H
H H
H C C
n
H H
C C
H H n
60. ALKYNES
• Contain triple bond
• General formula : CnHn-2. (n=2,3,4,….)
• Two elements of unsaturated for each triple bond
• Some reactions resemble the reactions of alkenes, like
addition and oxidation
• Some reactions are specific to alkynes
61. RULES FOR NAMING ALKYNES
1. Find the longest carbon chain containing the triple
bond. This gives the parent name of the compound.
2. Change –ane ending to –yne
3. Number the chain, starting at the end closest to the
triple bond
4. Give branches or other substituents a number to
locate their position.