Acid-base titration is a technique used to determine the concentration of an acid or base by neutralizing a solution of unknown concentration with a solution of known concentration. The reaction is monitored using an indicator that changes color at the endpoint of the titration. The document outlines the basic procedure which involves transferring a sample of the solution of unknown concentration into a flask, adding an indicator, and then titrating with the solution of known concentration until the endpoint is reached as indicated by the color change of the indicator. The volume added is used to calculate the concentration of the original unknown solution.
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Physical Chemistry
What is Gravimetric analysis, stepes invloved in gravimetry, Filteration medium in gravimetry, gravimetric factor, application, organic and inorganic prepecating agents
Titration - principle, working and applicationSaloni Shroff
A brief introduction to the titration technique used to know the concentration of unknown solutions. different types, indicators used and its application in foods and nutrition is also described.
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
Physical Chemistry
What is Gravimetric analysis, stepes invloved in gravimetry, Filteration medium in gravimetry, gravimetric factor, application, organic and inorganic prepecating agents
Titration - principle, working and applicationSaloni Shroff
A brief introduction to the titration technique used to know the concentration of unknown solutions. different types, indicators used and its application in foods and nutrition is also described.
Chemistry Lab Report on standardization of acid and bases. Karanvir Sidhu
I hope it might be helpful to you.
Email me on sidhu.s.karanvir@gmail.com to see more work.
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Vaccines against East Coast fever: Re-assessment of p67C and identification o...ILRI
Presentation by Anna Lacasta at the 12th Biennial Conference of the Society for Tropical Veterinary Medicine (STVM) and the VIII International Conference on Ticks and Tick-borne Pathogens (TTP-8) Cape Town, South Africa 24 to 29 August 2014.
Theileriosis Presented by Ahmed Abdulkadir Hassan
4th year student, college of veterinary medicine,
University of Bahri.
kadle010@gmail.com
khartoum, Sudan.
CHEMISTRY INVESTIGATORY PROJECT ON -
AIM:-
MEASURING THE AMOUNT OF ACETIC ACID IN VINEGAR BY TITRATION WITH AN INDICATOR SOLUTION
PURPOSE:-
THE GOAL OF THIS PROJECT IS TO DETERMINE THE AMOUNT OF ACETIC ACID IN DIFFERENT TYPES OF VINEGAR USING TITRATION WITH A COLORED pH INDICATOR TO DETERMINE THE ENDPOINT
Chemistry Investigated Project for CBSE Class 12
To get the whole "WORD" file DM me at
wadhawan.maanit@yahoo.com
Or Watsapp- 6389004709
( INCLUDING COVER PAGE, CERTIFICATE, AKNOWLEDGEMENT,INDEX, THEORY AND BIBLIOGRAPHY)
Non Aqueous Titration
Types of solvents used in non aqueous Titration
Compounds used for non aqueous Titration
Titration done for weak acid and weak base,
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Cancer cell metabolism: special Reference to Lactate PathwayAADYARAJPANDEY1
Normal Cell Metabolism:
Cellular respiration describes the series of steps that cells use to break down sugar and other chemicals to get the energy we need to function.
Energy is stored in the bonds of glucose and when glucose is broken down, much of that energy is released.
Cell utilize energy in the form of ATP.
The first step of respiration is called glycolysis. In a series of steps, glycolysis breaks glucose into two smaller molecules - a chemical called pyruvate. A small amount of ATP is formed during this process.
Most healthy cells continue the breakdown in a second process, called the Kreb's cycle. The Kreb's cycle allows cells to “burn” the pyruvates made in glycolysis to get more ATP.
The last step in the breakdown of glucose is called oxidative phosphorylation (Ox-Phos).
It takes place in specialized cell structures called mitochondria. This process produces a large amount of ATP. Importantly, cells need oxygen to complete oxidative phosphorylation.
If a cell completes only glycolysis, only 2 molecules of ATP are made per glucose. However, if the cell completes the entire respiration process (glycolysis - Kreb's - oxidative phosphorylation), about 36 molecules of ATP are created, giving it much more energy to use.
IN CANCER CELL:
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
introduction to WARBERG PHENOMENA:
WARBURG EFFECT Usually, cancer cells are highly glycolytic (glucose addiction) and take up more glucose than do normal cells from outside.
Otto Heinrich Warburg (; 8 October 1883 – 1 August 1970) In 1931 was awarded the Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme.
WARNBURG EFFECT : cancer cells under aerobic (well-oxygenated) conditions to metabolize glucose to lactate (aerobic glycolysis) is known as the Warburg effect. Warburg made the observation that tumor slices consume glucose and secrete lactate at a higher rate than normal tissues.
This pdf is about the Schizophrenia.
For more details visit on YouTube; @SELF-EXPLANATORY;
https://www.youtube.com/channel/UCAiarMZDNhe1A3Rnpr_WkzA/videos
Thanks...!
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
2. WHAT IS ACID-BASE TITRATION?
Acid-base titration is a technique to determine
the concentration of an acid or base solutions by
neutralizing the unknown concentration of a
solution (acid/base) with the known
concentration of base/acid.
The neutralization reaction is determined by
using an indicator where the indicator will
change its colour at the end point of the
titration. This method allows the quantitative
analysis for the unknown acid/alkali
concentration.
3. What is Neutralisation???
• Acids and alkalis are like ‘chemical
opposite’. If we add just the right
amount of acid to an alkali, they
‘cancel each other out’, and we get
a neutral solution. A chemical
reaction takes place. The acid and
alkali react together. In any
chemical reaction a new substances
are made. In this case a salt and
water are formed. The reaction is
called neutralisation. We can show
the reaction like this:
Acid + Base Salt + Water
Acid + Alkali Salt + Water
Did you know?
Table salt is often
called ‘common
salt’. Its chemical
name is sodium
chloride. There are
many other salts
that can be made
by adding different
acids and alkalis
together.
4. • During the neutralisation, the actual reaction that
occurred is between one hydrogen ion H+ from the acid
and one hydroxide ion, OH- from the alkali to form one
molecule of water, H2O.
• The ionic equation between an acid an alkali can be
constructed and written as shown below.
Chemical Equation:
HCl(aq) + NaOH(aq) NaCl(aq) + H2O(l)
H+Cl-
(aq) + Na+OH-
(aq) Na+Cl-
(aq) + H2O(l)
Ionic Equation:
H+
(aq) + OH-
(aq) H2O(l)
EQUATION
5. OVERVIEW
• We fill a burette with the solution of reagent of known
concentration.
• The burette is provided with the scales of volume expressing
cubic centimeters and 10 of cubic centimeters.
• Now we add a known volume of the solution being
investigated to a conical flask followed by a few drops of an
indicator.
• The reagent of known concentration is added in small portion
until the indicator just changes colour (end point of the
titration-achieved when all the OH- ions combine with all the
H+ ions in the solution to form water which is neutral)
• The volume of the liquid added from the burette is calculated
because the titration technique is based on measurement of
volume (volumetric analysis)
6. THREE COMMON TYPES OF INDICATORS
AT DIFFERENT PH VALUES.
Indicator Colour in acids
Colour in neutral
solution
Colour in alkalis
Methyl orange Red Orange Yellow
Phenolphthalein Colourless Colourless Light Pink
Litmus Red Orange Blue
7. PROCEDURE OF ACID-BASE TITRATION
1) Transfer 25.0 cm3 of sodium hydroxide, NaOH, into a conical flask
by using pipette.
2) Put a few drops of phenolphthalein into the sodium hydroxide,
NaOH solution.
3) Clamp the burette vertically on the retort stand and fill in with
0.1 mol dm-3 hydrochloric acid, HCl.
4) Place the conical flask containing sodium hydroxide solution on
top of the white tile at the base of the retort stand.
5) Record the initial volume of the hydrochloric acid in the burette.
6) Add the hydrochloric acid into the conical flaks slowly until the
pink solution changes to colourless while continuously shaking the
conical flask.
7) Record the final volume of the hydrochloric acid on the burette.
8) Repeat the titration process three times to obtain more accurate
volume of hydrochloric acid at the end point.
9. Answer:
To determine the concentration of an acid or base solutions by
neutralizing the unknown concentration of a solution (acid/base) with
the known concentration of base/acid.
10. Pre-step 1
The pipette rinsed with distilled water followed by
sodium hydroxide (NaOH) solution
11. Step 1
25.0 cm3 of sodium hydroxide, NaOH, transferred
into a conical flask by using pipette.
12. Step 2
A few drops of phenolphthalein added into the sodium
hydroxide, NaOH solution.
13. Pre-step 3
The burette is rinsed with distilled water and a
little of hydrocloric acid (HCl)
14. Step 3
The burette clamped vertically on the retort stand and
filled in with 0.10 mol dm-3 hydrochloric acid, HCl
15. Step 4
The conical flask containing sodium hydroxide solution
placed on top of the white tile at the base of the retort
stand.
16. Step 5
The initial volume of the hydrochloric acid in the burette
is recorded.(must be at 0.0 cm³)
17. Step 6
The hydrochloric acid is added into the conical flaks slowly
until the pink solution changes to colourless while
continuously shaking the conical flask.
18. Step 7
The final volume of the hydrochloric acid on the
burette is recorded.
22.0 cm3
19. Step 8
The titration process repeated three times to obtain
more accurate volume of hydrochloric acid at the end
point.
20. GRAPH CHANGES DURING TITRATION
Green button= before end point Red button = end point
21. BASIC CONCEPT OF THE CALCULATION.
a Acid + b Alkali Salt + Water
Molarity of acid = MA Molarity of alkali = MB
Volume of acid = VA Volume of alkali = VB
a
b
= constant
(fixed value)
MAVA/1000 = a
MBVB/1000 b
MAVA = a
MBVB b
22. SOLUTION:
1. Write a balanced equation for the
reaction. Deduced the mole ratio of
NaOH to HCl
2. Calculate the number of moles of HCl.
3. Calculate the number of moles of NaOH.
4. Equate the mole ratio from step 3 with
the mole ratio from step 1 and 2. Solve
the value of x.
23. Answer:-
1. NaOH (aq) + HCl (aq) NaCl (aq) + H2O (l)
2. Moles of HCl.
= 0.01 mol dm-3 x 0.022 dm3
= 0.0022 mol
0022.0
0250.0
1
1 x
HClofmolesofNumber
NaOHofmolesofNumber
0250.0
0022.0
x 088.0
3. Moles of sodium hydroxide, NaOH
= x mol dm-3 x 0.0250 dm3
= 0.0250x mol
4. Moles equation:-
-The molarity of sodium hydroxide, NaOH solution = 0.088 mol dm-3.