Question

A mixture of He and Ne at a total pressure of 0.95 atm is found to contain 0.32 mol of He and 0.56 mol of Ne. The partial pressure of Ne is ___ atm

Answer 1

\[P _{total} = P _{He} + P _{Ne}\]
Partial pressure of a gas = molar fraction x total pressure

Answer 2

How do i find the molar fraction?

Answer 3

Molar fraction = no. of moles of one component divided by the total no. of moles of all the compounds in the mixture

Answer 4

The molar fraction of Ne would be
\[\frac{ 0.56mol }{ (0.56 + 0.32)mol }\]

Answer 5

Awesome! so then i take that times 0.95?

Answer 6

yep