`p^@` and `p` are vapour pressure of pure liquid and solution respectively. Among (a) `p^@,` (b) `p//p^@` and (c) `(p^@ - p)//p^@`, which are temperature independent. Why ?

Explanation

To determine which of the given expressions are temperature independent, we need to analyze each one in the context of Raoult's Law and the properties of vapor pressure.

### Step-by-Step Solution:

1. **Understanding Vapor Pressure**:
- \( p^0 \) is the vapor pressure of the pure liquid.
- \( p \) is the vapor pressure of the solution.
- Vapor pressure is influenced by temperature; as temperature increases, vapor pressure of a pure liquid generally increases.
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