At `40^(@)C`, vapour pressure in Torr of methanol and ethanol solution is `P=119x+135` where `x` is the mole fraction of methanol. Hence

Options

A. vapour pressure of pure methanol is `119` Torr
B. vapour pressure of pure ethanol is `135` Torr
C. vapour pressure of equimolar mixture of each is `127` Torr
D. mixture is completely immiscible

Explanation

To solve the problem regarding the vapor pressure of a methanol and ethanol solution at 40°C, we will follow these steps:

### Step 1: Understand the given equation
The vapor pressure of the methanol and ethanol solution is given by the equation:
\[ P = 119x + 135 \]
where \( x \) is the mole fraction of methanol.

### Step 2: Apply Raoult's Law
...