Home › Maharashtra HSC (Class 12) › Chemistry › Ideal and Non-Ideal Solutions › Raoult's law for an ideal solution states that t…
Raoult's law for an ideal solution states that the vapour pressure of a component is
Aproportional to its mole fraction in the solution
Bindependent of composition (typical)
Cequal to its pure value
Dproportional to its mass fraction
Answer & Solution
Correct answer: A. proportional to its mole fraction in the solution
1. For an ideal solution: p_A = p_A° · x_A where x_A is mole fraction of A in the liquid.
2. Total vapour pressure follows additively for ideal mixtures.
3. Hence partial vapour pressure is proportional to mole fraction.
_Source: Maharashtra Balbharati Std XII Chemistry, Ch 2 "Solutions" §2.5_
Related questions
The nitric acid and water azeotrope holds nitric acid at about:Distilling an ethanol and water mixture stops at about:A large negative deviation produces an azeotrope that is:A large positive deviation produces an azeotrope that is:The components of an azeotrope cannot be separated by:Binary mixtures boiling at a constant temperature are called:Chloroform and acetone form a hydrogen bond, so the vapour pressure:A mixture of phenol and aniline shows: