A mixture of 10.0 g of Ne and 10.0 g Ar has a total pressure of 1.6 atm.What is the partial pressure of Ne?
A)1.1 atm
B)0.80 atm
C)0.54 atm
D)0.40 atm
E)1.3 atm

Question

Quizplus · Accepted Answer

The partial pressure of a gas in a mixture is equal to the mole fraction of that gas multiplied by the total pressure. The mole fraction of Ne is 10.0 g / (10.0 g + 10.0 g) = 0.5. Therefore, the partial pressure of Ne is 0.5 * 1.6 atm = 0.8 atm.

A Mixture of 10