Question

1. A closed flask contains gas at STP (273K, 76 cmHg). If the temperature is raised to 400K what will the pressure be in mmHg?

Answer 1

At STP

$\frac{P_1}{T_1} = \frac{P_2}{T_2}$

P₁ = 76cmHg , T₁ = 273K ,P₂ = ? , T₂ = 400K

$\frac{76cmHg}{273K} = \frac{P_2}{400K}$

$P_2 = \frac{400K×76cmHg}{273K}$

$P_2 = 111.35cmHg$