# 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?

May 16, 2017

$314 t o r r$

#### Explanation:

According to Dalton's law of partial pressures,

${P}_{t o t a l} = {P}_{1} + {P}_{2} + {P}_{3} \ldots$

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

${P}_{t o t a l} = {P}_{N {H}_{3}} + {P}_{{N}_{2}} + {P}_{{H}_{2} O}$

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