Question

Which principle states that the partial vapour pressure of each volatile component in a solution is directly proportional to its mole fraction?

• A. Raoult's Law
• B. Henry's Law
• C. Dalton's Law
• D. Boyle's Law

Answer 1

Answer:

A. Raoult's Law

According to Raoult's law the partial vapour pressure of each component in the solution is directly proportional to its mole fraction. Raoult's law has been named after François-Marie Raoult, a French chemist, who while conducting an experiment, found out that when substances were mixed in a solution, the vapour pressure of the solution decreased simultaneously. Raoult's law was established in the year 1887 and is also considered as the law of thermodynamics.