If 4 moles of gas are added to a container that already holds 1 mole of gas, what happens to the pressure inside the container due to the change in the amount of gas?

1 Answer
anor277
Sep 12, 2016

The pressure increases fivefold.

Explanation:

At constant volume, and constant temperature, pressure is proportional to the number of molecules, and thus to the number of moles.

We can see this immediately from the Ideal Gas equation:

i.e. #P_1# #=# #(nxxRxxT)/V#

#P_2# #=# #((n+4n)xxRxxT)/V# #=# #5P_1#

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