CBSE Class 12 Chemistry Solutions Assignment

CBSE Class 12 Chemistry Solutions Assignment. Students are advised to refer to the attached assignments and practise them regularly. This will help them to identify their weak areas and will help them to score better in examination. Parents should download and give the assignments to their children for practice.
 
 
LEVEL-1 QUESTIONS
2.1 What are solns?
Homogeneous mixture containing two or more than two components.
 
2.2 What are binary solns?
Binary solution : Solutions containing only two components.
 
2.3.Define mole fraction
Ratio of number of moles of a component to the total number of moles of solutions.
 
2.4 Define molarity
Number of moles of solute dissolved in one litre of solution.
 
2.5 Define molality
Number of moles of the solute dissolved in 1 kg of the solvent.
 
2.6. State Henry’s law
The partial pressure of the gas in vapour phase is directly proportional to the molefraction of the gas in the solution.
P = KH x
 
2.7. Mention one application of Henry’s law
To increase the solubility of CO2 in soft drinks , the bottle is sealed under high pressure.
 
2.8. State Raoutlt’s Law
For a solution of volatile liquids, the partial vapour pressure of each component in the solution is directly proportional to its mole fraction.
P1 = p01 x1
 
 
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