Question

If a gas is cooled from 315K to 231K and the volume is kept constant, what would the final pressure be if the original pressure was 621 mmHg ?

Answer 1

Answer:

455.4 mmHg

Explanation:

To solve this problem we can use Gay Lussac's Law, which describe the temperature and pressure of a gas, at constant volume and composition:

• P₁T₂ =  P₂T₁

In this case:

• P₁ = 621 mmHg

• P₂ = ?

• T₁ = 315 K

• T₂ = 231 K

We input the data:

• 621 mmHg * 231 K = P₂ * 315 K

And solve for P₂:

• P₂ = 455.4 mmHg