This document describes an experiment to measure the solubility of sodium chloride (table salt), magnesium sulfate (Epsom salt), and sucrose (table sugar) in water. The procedure involves adding measured amounts of each solute to 100mL of water until saturation is reached, where no more solute will dissolve. The amounts of each solute dissolved are recorded. Observations show that NaCl has the highest solubility, followed by MgSO4, with sucrose having the lowest solubility. This result aligns with the theory that ionic compounds and smaller molecules dissolve more readily than larger, polar molecules. Heating the solutions increased the solubility of all three substances.
Rectifier class 12th physics investigatory projectndaashishk7781
Investigatory project of physics class 12 for helping kendriya vidyalaya students
Project on rectifier whoever taking this project also requires a modal of rectifier
Rectifier class 12th physics investigatory projectndaashishk7781
Investigatory project of physics class 12 for helping kendriya vidyalaya students
Project on rectifier whoever taking this project also requires a modal of rectifier
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
CBSE Investigatory Project For Class 11 Of Chemistry Subject.
Topic- To Study The Forming Capacity Of The Various Samples Of Soap.
.
Disclaimer- The Direct Downloading Of The File and Printing Without any Changes Is Violation Of the Copyright Issues Published On This File. Kindly Use It For Informative Purposes Only.
Thank You
You Can Also Download Complete File Via link-
https://drive.google.com/file/d/1xiJ4OeGgvMzd7kUjSxM2SZuTv2eBPUTS/view?usp=sharing
PHYSICS INVESTIGATORY PROJECT
AIM:-
CHARGING AND DISCHARGING OF CAPACITORS IN R-C CIRCUIT
PURPOSE
THE GOAL OF THIS PROJECT IS TO verify that 63% charge is stored in a capacitor in an R-C circuit at its time constant and 63% charge remains when capacitor is discharged and hence plot a graph between voltage and time
chemistry project for class 12 on analysis of honeyRadha Gupta
this is a project for class 12 boards for chemistry subject on analysis of honey.it will be very helpful for students who are searching for chemistry project
This project contains topic "Effect of sodium carbonate on foaming capacity of Soap" with several observations to help class XII students for their projects.
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
CBSE Investigatory Project For Class 11 Of Chemistry Subject.
Topic- To Study The Forming Capacity Of The Various Samples Of Soap.
.
Disclaimer- The Direct Downloading Of The File and Printing Without any Changes Is Violation Of the Copyright Issues Published On This File. Kindly Use It For Informative Purposes Only.
Thank You
You Can Also Download Complete File Via link-
https://drive.google.com/file/d/1xiJ4OeGgvMzd7kUjSxM2SZuTv2eBPUTS/view?usp=sharing
PHYSICS INVESTIGATORY PROJECT
AIM:-
CHARGING AND DISCHARGING OF CAPACITORS IN R-C CIRCUIT
PURPOSE
THE GOAL OF THIS PROJECT IS TO verify that 63% charge is stored in a capacitor in an R-C circuit at its time constant and 63% charge remains when capacitor is discharged and hence plot a graph between voltage and time
chemistry project for class 12 on analysis of honeyRadha Gupta
this is a project for class 12 boards for chemistry subject on analysis of honey.it will be very helpful for students who are searching for chemistry project
This project contains topic "Effect of sodium carbonate on foaming capacity of Soap" with several observations to help class XII students for their projects.
This powerpoint talks about the law Conservation of Mass. You will know who,when and how the discoverer found the Law of Conservation of mass. This is a work that is very good, because it has lots of images, example and you will undestand everything because the vocabulary is simple and anyone can understand it
i came to this site to search for good projects but made my own , uploading so that you all dont have a hard time .
note : the index and the front page is not complete as the page number formats for each school is different . also the certification and acknowledgement .
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
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Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
2. INDEX
I. CERTIFICATE
II. ACKNOWLEDGEMENT
III. OBJECTIVE
IV. INTRODUCTION
V. BASIC CONCEPTS
VI. MATERIALS & EQUIPMENT
VII. EXPERIMENTAL PROCEDURES
VIII.OBSERVATION
IX. CONCLUSION
X. RESULT
XI. PRECAUTIONS
XII. BIBLIOGRAPHY
3. CERTIFICATE
THIS IS TO CERTIFY THAT PRIDHUMN GAUR OF CLASS XII-SA1
HAS SCCESSFULLY CARRIED OUT THE PROJCT ENTITLED
“SATURATED SOLUTIONS : MEASURING SOLUBILTY” UNDER
MY SUPERVISION.
ALL THE WORKS RELATED TO THE THESIS WAS DONE BY THE
CANDIDATE HIMSELF.
THE APPROACH TOWARDS THE SUBJECT HAS BEEN SINCERE
AND SCIENTIFIC
Mrs. MONICA WADHWA
CHEMISTRY FACULTY
MODERN VIDYA NIKETAN
SECTOR- 17
FARIDABAD, HR.
4. ACKNOWLEDGEM
ENT
I am grateful to Almighty for giving me the strength to
successfully conduct my experiment and for sustaining
my efforts which many a times did oscillate.
I am deeply indebted to Mrs. MONICA WADHWA Mam,
our physics faculty without whose constructive guidance
this project would not have been a success. His valuable
advice and suggestions for the corrections,
modifications and improvement did enhance the
perfection in performing my job well.
I am obliged to Mr J.P. Gaur, our principal for providing
the best of facilities and environment to bring out our
innovation and spirit of inquiry through this venture.
I am grateful to My Parents and My Brother whose
blessings and wishes have gone a long way in the
completion of this arduous task.
Last but not the least I thank all My Friends and Batch
Mates, without their prompt support my efforts would
have been in vain.
5. OBJECTIVE
The goal of this project is to measure the
solubilities of some common chemicals:
Table salt (NaCl)
Epsom salts (MgSO4)
sugar (sucrose, C12H22O11).
6. INTRODUCTION
A good part of the substances we deal with in daily life, such
as milk, gasoline, shampoo, wood, steel and air are
mixtures. When the mixture is homogenous, that is to say,
when its components are intermingled evenly, it is called a
solution. There are various types of solutions, and these can
be categorized by state (gas, liquid, or solid). The chart
below gives some examples of solutions in different states.
Many essential chemical reactions and natural processes
occur in liquid solutions, particularly those containing water
(aqueous solutions) because so many things dissolve in
water. In fact, water is sometimes referred to as the
universal solvent. The electrical charges in water molecules
help dissolve different kinds of substances. Solutions form
when the force of attraction between solute and solvent is
greater than the force of attraction between the particles in
the solute. Two examples of such important processes are
the uptake of nutrients by plants, and the chemical
weathering of minerals. Chemical weathering begins to take
place when carbon dioxide in the air dissolves in rainwater.
A solution called carbonic acid is formed. The process is
then completed as the acidic water seeps into rocks and
dissolves underground limestone deposits. Sometimes, the
dissolving of soluble minerals in rocks can even lead to the
formation of caves. If one takes a moment to consider
aqueous solutions, one quickly observes that they exhibit
many interesting properties. For example, the tap water in
your kitchen sink does not freeze at exactly 0°C. This is
because tap water is not pure water; it contains dissolved
solutes. Some tap water, commonly known as hard water,
contains mineral solutes such as calcium carbonate,
magnesium sulphate, calcium chloride, and iron sulphate.
Another interesting solution property is exhibited with salt
and ice. Another example comes from the fact that salt is
spread on ice collected on roads in winters. When the ice
begins to melt, the salt dissolves in the water and forms salt
water. The reason is that with the addition of salt the
melting point of water increases and as a result the snow
melts away faster. Even some organisms have evolved to
survive freezing water temperatures with natural
“antifreeze.” Certain arctic fish have blood containing a high
concentration of a specific protein. This protein behaves like
a solute in a solution and lowers the freezing point of the
blood. Going to the other end of the spectrum, one can also
observe that the boiling point of a solution is affected by the
addition of a solute. These two properties, namely freezing-
point depression and boiling-point elevation, are called
7. BASIC CONCEPTS
A saturated solution is a mixture in which no more
solute can be practically dissolved in a solvent at a given
temperature. It is said practical because theoretically
infinite amount of solute can be added to a solvent, but
after a certain limit the earlier dissolved solute particles
start rearranging and come out at a constant rate. Hence
overall it appears that no solute is dissolved after a given
amount of solute is dissolved. This is known as a
saturated solution.
In an unsaturated solution, if solute is dissolved in a
solvent the solute particles dissociate and mix with the
solvent without the re-arrangement of earlier dissolved
solute particles.
Solubility depends on various factors like the Ksp of the
salt, bond strength between the cation and anion,
covalency of the bond, extent of inter and intramolecular
hydrogen bonding, polarity, dipole moment etc. Out of
these the concepts of H-bonding, covalency, ionic bond
strength and polarity play a major role if water is taken
as a solvent.
Also physical conditions like temperature and pressure
also play very important roles as they affect the kinetic
energy of the molecules.
8. MATERIALS AND
EQUIPMENT
To do this experiment following materials and
equipment are required:
• Distilled water
• Metric liquid measuring cup (or graduated
cylinder)
• Three clean glass jars or beakers
• Non-iodized table salt (NaCl)
• Epsom salts (MgSO4)
• Sugar (sucrose, C12H22O11)
• Disposable plastic spoons
• Thermometer
• Three shallow plates or saucers
• Oven
• Electronic kitchen balance (accurate to 0.1 g)
9. EXPERIMENTAL
PROCEDURE
Determining Solubility
1. Measure 100 mL of distilled water and pour into a
clean, empty beaker or jar.
2. Use the kitchen balance to weigh out the suggested
amount (see below) of the solute to be tested.
3. (a) 50 g Non-iodized table salt (NaCl) (b) 50 g
Epsom salts (MgSO4) (c) 250 g Sugar (sucrose,
C12H22O11)
4. Add a small amount of the solute to the water and stir
with a clean disposable spoon until dissolved.
5. Repeat this process, always adding a small amount
until the solute will no longer dissolve.
6. Weigh the amount of solute remaining to determine
how much was added to the solution.
7. Try and add more solute at the same temperature and
observe changes if any.
8. Now heat the solutions and add more solute to the
solutions.
10. OBSERVATIONS
SALT Amount of
salt dissolved
in 100mL
water to make
saturated
solution.
(in gms.)
Moles
dissolved
NaCl (Non-
Iodised
Common Salt)
36.8 0.7
MgSO4 32.7 0.255
Sucrose(C12H22
O11)
51.3 0.15
Adding more solute at the same temperature to the
saturated solutions yielded no significant changes in NaCl
and Epsom salt. However at all temperatures the
saturation point of sucrose could not be obtained exactly
as due to the large size of the molecule the solution
became thick and refraction was more prominent.
Neglecting this observation in the room for error, the
experiments agreed with the theory. Adding more solute
to heated solutions increased the solubility in all the 3
cases. The largest increase was shown by NaCl, followed
by Epsom salt and sucrose. These facts too agreed with
the theory as at high temperatures the kinetic energy of
molecules increases and the collisions are more effective.
11. CONCLUSIONS
The solubility of NaCl is the highest as it an ionic
salt and easily dissociates in water. Also since the
size of both the cation and anion are small, the
collisions are more and hence probability of
dissociation is high. The solubility of MgSO4 is
also high as it is also an ionic salt, but due to a
larger anion, collisions are not very effective. The
solubility of C12H22O11 is the least as it a very
large molecule due to which hydrogen bonding
with the water molecules is not very effective.
Also due to the large number of carbon and
oxygen atoms, inter molecular H-bonding is more
dominant than intramolecular H-bonding.
Solution of NaCl.
12. PRECAUTIONS
1. While adding the solute to the solvent, the solution
should be stirred slowly so as to avoid the formation
of any globules.
2. Stirring should not be vigorous as the kinetic energy
of the molecules might change due to which solubility
can increase.
3. While stirring, contact with the walls of the container
should be avoided as with every collision, an impulse
is generated which makes the dissolved solute
particles rearrange themselves. As a result solubility
can decrease.
4. The temperature while conducting all the three
experiments should be approximately same.
5. Epsom salt should be first dried in order to remove
the water of crystallization (MgSO4.7H2O)
13. RESULT
The saturated solutions of NaCl, MgSO4 and C12H22O11
were made and observed. The observations agreed with
the related theory within the range of experimental error.