Chemistry Practical Class 11

CBSE is a well known prestigious examination board in India, which conducts examination for 10th and 12th standard. The chemistry practical exam syllabus is prepared by the CBSE board according to the CCE guidelines. The practical exam consists of 30 marks, therefore students must prepare well to get good marks on the exam.

Chemistry is an interesting subject as it gives knowledge about the behavior of matter, composition, properties, etc. The Class 11 chemistry practical exam syllabus is designed by CBSE in such a way that it evaluates a student’s expertise thoroughly. The Chemistry Practical Class 11 is provided here. Students can read these practical notes to prepare more efficiently for the examination

A. Basic Laboratory Techniques
1. Cutting glass tube and glass rod
2. Bending a glass tube
3. Drawing out a glass jet
4. Boring a cork
B. Characterization and Purification of chemical Substances
1. Determination of melting point of an organic compound.
2. Determination of boiling point of an organic compound.
3. Crystallization of impure sample of any one of the following: Alum, Copper Sulphate, Benzoic Acid.
C. Experiments based on pH
(a) Any one of the following experiments:
Determination of pH of some solutions obtained from fruit juices, solution of known and varied concentrations of acids, bases and salts using pH paper or universal indicator.
Comparing the pH of solutions of strong and weak acids of same concentration.
Study the pH change in the titration of a strong base using universal indicator.
(b) Study the pH change by common-ion In case of weak acids and weak bases.
D. Chemical Equilibrium
One of the following experiments:
a) Study the shift in equilibrium between ferric ions and thiocyanate ions by increasing/decreasing the concentration of either of the ions.
b) Study the shift in equilibrium between [Co(H2O)6]2+ and chloride ions by changing the concentration of either of the ions.
E. Quantitative Estimation
i) Using a chemical balance.
ii) Preparation of standard solution of Oxalic acid.
iii) Determination of strength of a given solution of Sodium Hydroxide by titrating it against standard solution of Oxalic acid.
iv) Preparation of standard solution of Sodium Carbonate.
v) Determination of strength of a given solution of Hydrochloric acid by titrating it against standard Sodium Carbonate solution.
F. Qualitative Analysis
Determination of one anion and one cation in a given salt
Cations – Pb+, Cu2+, Al3+, Fe3+, Mn2+, Ni2+, Zn2+, Co2+, Ca2+, Sr2+, Ba2+, Mg2+, NH4+
Anions – CO32‒, S2‒, SO32‒, SO42‒, NO2‒, Cl‒, Br ‒, I‒, PO43‒, C2O­42‒, CH3COO‒
(Note: Insoluble salts excluded)
Project
Scientific investigations involving laboratory testing and collecting information from other sources.
A few suggested Projects
• Checking the bacterial contamination in drinking water by testing sulphide ion.
• Study of the methods of purification of water.
• Testing the hardness, presence of Iron, fluoride, Chloride, etc., depending upon the regional variation in drinking water and study of causes of presence of these ions above permissible limit (if any).
• Investigation of the foaming capacity of different washing soaps and the effect of addition of Sodium Carbonate on it.
• Study the acidity of different samples of tea Leaves.
• Determination of the rate of evaporation of different Liquids.
• Study the effect of acids and bases on the tensile strength of fibers.
• Study of acidity of fruit and vegetable juices.

EXPERIMENT-1

PREPARATION OF STANDARD SOLUTION OF OXALIC ACID:

AIM:

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THEORY:

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MATERIAL REQUIRED:

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PROCEDURE:

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PRECAUTIONS:

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EXPERIMENT-2

PURIFICATION OF SAMPLE OF A COMPOUND BY CRYSTALLISATION:

AIM:

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THEORY:

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MATERIAL REQUIRED:

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PROCEDURE:

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PRECAUTIONS:

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EXPERIMENT-3

DETERMINATION OF MELTING POINT OF AN ORGANIC COMPOUND:

AIM:

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THEORY:

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MATERIAL REQUIRED:

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PROCEDURE:

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PRECAUTIONS:

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EXPERIMENT-4

DETERMINATION OF BOILING POINT OF AN ORGANIC COMPOUND:

AIM:

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THEORY:

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MATERIAL REQUIRED:

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PROCEDURE:

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PRECAUTIONS:

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EXPERIMENT-5

STUDY OF SHIFT IN EQUILIBRIUM IN THE REACTION OF FERRIC IONS AND THIOCYANATE IONS:

AIM:

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THEORY:

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MATERIAL REQUIRED:

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PROCEDURE:

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PRECAUTIONS:

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EXPERIMENT-6

TO DETERMINE THE pH OF SOME FRUIT JUICES:

AIM:

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THEORY:

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MATERIAL REQUIRED:

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PROCEDURE:

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RESULT:

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PRECAUTIONS:

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EXPERIMENT-7

DETERMINATION OF THE CONCENTRATION (STRENGTH) OF A GIVEN SODIUM HYDROXIDE SOLUTION BY TITRATING IT AGAINST A STANDARD SOLUTION OF OXALIC ACID:

AIM:

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THEORY:

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MATERIAL REQUIRED:

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PROCEDURE:

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CALCULATION:

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RESULT:

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PRECAUTIONS:

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