A gaseous mixture of helium and neon at #1*atm# contains a partial pressure of #0.60*atm# with respect to helium. What is #P_"Ne"#?

1 Answer
Mar 24, 2017

Answer:

#P_"Ne"=P_"Total"-P_"He"=0.40*atm........#

Explanation:

Dalton's law of partial pressures holds that in the gaseous mixture, the partial pressure exerted by a component is the same as the pressure as it would exert if it ALONE occupied the container. The total pressure is the sum of the individual partial pressures.

And thus #P_"Total"=P_"He"+P_"Ne"#. We are given #P_"Total"# and #P_"He"#; it is thus fairly straightforward to get #P_"Ne"# by difference.

For a more general treatment, see here.

Capisce?