Question:
The vapour pressure of water is 12.3 kPa at 300 K. The V.P. of 1 M solution of a non-volatilenon electrolyte solution is
The vapour pressure of water is 12.3 kPa at 300 K. The V.P. of 1 M solution of a non-volatilenon electrolyte solution is
Updated On: Jul 26, 2023
- 10.08 kPa
- 12.08 kPa
- 8.3 kPa
- 10.3 kPa
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The Correct Option is B
Solution and Explanation
As the solution is quite dilute 1 M = 1 m. Thus, 1 mol of solute is present in 1000 g (55.5 mol) of water
$\frac{1}{1+55.5} \approx \frac{12.3 - p_A}{12.3}$
$p_A = 12.08 $ k Pa.
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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:
- Unsaturated Solution- A solution in which more solute can be dissolved without raising the temperature of the solution is known as an unsaturated solution.
- 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.
- Supersaturated Solution- A solution that contains more solute than the maximum amount at a certain temperature is known as a supersaturated solution.