A mixture of He, Ne and Ar has a total pressure of 0.80 atm and is found to contain 0.55 mol He, 0.94 mol Ne and 0.35 mol Ar. What is the partial pressure (in atm) of each gas? He Ne Ar

Question

Quizplus · Accepted Answer

The total moles of gas in the mixture is:

0.55 mol He + 0.94 mol Ne + 0.35 mol Ar = 1.84 mol

To find the partial pressure of each gas, we use the formula:

Partial pressure = (moles of gas / total moles of gas) x total pressure

For He:

Partial pressure of He = (0.55 mol / 1.84 mol) x 0.80 atm = 0.24 atm

For Ne:

Partial pressure of Ne = (0.94 mol / 1.84 mol) x 0.80 atm = 0.41 atm

For Ar:

Partial pressure of Ar = (0.35 mol / 1.84 mol) x 0.80 atm = 0.15 atm

Therefore, the correct answer is choice C.

A Mixture of He, Ne and Ar Has a Total