How is the vapour pressure of a solvent affected when a non volatile solute is dissolved in it?

Explanation

To understand how the vapor pressure of a solvent is affected when a non-volatile solute is dissolved in it, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Components**:
- Let’s denote the solvent as B and the non-volatile solute as A.

2. **Understand Vapor Pressure**:
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