Question:

The vapour pressure of two liquids $'P'$ and $'Q'$ are $80$ and $60$ torr respectively. The total vapour pressure of solution obtained by mixing $3$ mole of $P$ and $2$ mol of $Q$ would be

Updated On: Jun 23, 2023
  • 140 torr
  • 20 torr
  • 68 torr
  • 72 torr
Hide Solution
collegedunia
Verified By Collegedunia

The Correct Option is D

Solution and Explanation

Mole fraction of $P=\frac{3}{3+2}=\frac{3}{5}$ Mole fraction of $Q=\frac{2}{3+2}=\frac{2}{5}$ Hence, total vapour pressure $=$ (Mole fraction of $P \times$ Vapour pressure of $P)+($ mole fraction of $Q \times$ Vapour pressure of $Q)$ $=\left(\frac{3}{5} \times 80+\frac{2}{5} \times 60\right)=48+24$ $=72$ torr
Was this answer helpful?
0
0

Questions Asked in AIIMS exam

View More Questions

Concepts Used:

Solutions

A solution is a homogeneous mixture of two or more components in which the particle size is smaller than 1 nm.

For example, salt and sugar is a good illustration of a solution. A solution can be categorized into several components.

Types of Solutions:

The solutions can be classified into three types:

  • Solid Solutions - In these solutions, the solvent is in a Solid-state.
  • Liquid Solutions- In these solutions, the solvent is in a Liquid state.
  • Gaseous Solutions - In these solutions, the solvent is in a Gaseous state.

On the basis of the amount of solute dissolved in a solvent, solutions are divided into the following types:

  1. Unsaturated Solution- A solution in which more solute can be dissolved without raising the temperature of the solution is known as an unsaturated solution.
  2. Saturated Solution- A solution in which no solute can be dissolved after reaching a certain amount of temperature is known as an unsaturated saturated solution.
  3. Supersaturated Solution- A solution that contains more solute than the maximum amount at a certain temperature is known as a supersaturated solution.