Question

A cylinder contains nitrogen and oxygen under 4.015 atm pressure. The partial pressure of N2 is 2.907 atm. What is the partial pressure of the water vapor? Group of answer choices

Answer 1

Answer: The partial pressure of the water vapor is 1.108 atm

Explanation:

According to Dalton's law, the total pressure of a mixture of gases is the sum of individual pressures exerted by the constituent gases.

$p_{total}=p_A+p_B$

Thus $p_{total}=p_{N_2}+p_{H_2O}$

Given: $p_{total}$ =4.015 atm

$p_{N_2}$= 2.907 atm

$p_{H_2O}$ = ?

Thus $4.015=2.907+p_{H_2O}$

$p_{H_2O}=1.108atm$

Thus the partial pressure of the water vapor is 1.108 atm