A certain quantity of a gas occupied 50 ml, when collected over water at `15^@C` and 750 mm pressure. If the dry gas occupies 45.95 mL at NTP, calculate the aqueous tension at `15^@C` .

Explanation

To solve the problem, we need to find the aqueous tension at 15°C given the volume of a gas collected over water and its behavior at NTP (Normal Temperature and Pressure). Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Given Data
- Volume of gas collected over water (V1) = 50 mL
- Temperature (T1) = 15°C = 288 K (since K = °C + 273)
- Total pressure (P1) = 750 mmHg
- Volume of dry gas at NTP (V2) = 45.95 mL
- Temperature at NTP (T2) = 0°C = 273 K
...