A sample of neon is collected at 2.7 atm and 12.0 degrees C. It has a volume of 2.25 L. What would be the volume of this gas at STP?

1 Answer
Sep 23, 2016

Answer:

#"Standard temperature and pressure"# specifies #1*atm# pressure, and a temperature of #273.15*K#

Explanation:

The combined gas law holds that #(P_1V_1)/T_1=(P_2V_2)/T_2#.

And thus #V_2=(P_1xxV_1xxT_2)/(T_1xxP_2)#

#=# #(2.7*atmxx2.25*Lxx273.15*K)/(285.15*Kxx1*atm)#

#~=# #6*L#

This volume increase is reasonable as we have only marginally changed temperature, but have reduced pressure by a third.