Question

What is the total pressure of a container that has `NH_3(g)` exerting a pressure of 34 torr, `N_2(g)` exerting a pressure of 225 torr, and `H_2O(g)` exerting a pressure of 55 torr?

Answer 1

`314 t o r r`

Explanation:

According to Dalton's law of partial pressures,

`P_(t otal) = P_1 + P_2 + P_3 ...`

So the total pressure of the system is merely the partial pressures of each component added together:

`P_(t otal) = P_(NH_3) + P_(N_2) + P_(H_2O)`

`= 34 t o r r + 225 t o r r + 55 t o r r = 314 t o r r`