A rigid plastic container holds 1.00 L methane gas at 650 torr pressure when the temperature is 20.9°C. How much more pressure will the gas exert if the temperature is raised to 44.1°C?

1 Answer
anor277
Jul 27, 2018

#P_2=701.3*mm*Hg#

Explanation:

Well, old #"Charles' Law"# holds that #P_1/T_1=P_2/T_2# given constant volume, and constant quantity of gas, the which is the scenario we have here...we use #"absolute temperature"#....we ALSO know (or should know) that #1*atm# will support a column of mercury that is #760*mm# high...i.e. #1*atm-=760*"mm Hg"#

#P_2=P_1/T_1xxT_2=((650*mm*Hg)/(760*mm*Hg*atm^-1))/(294.05*K)xx317.25*K=0.923*atm#

...approx. #701.3*mm*Hg#...

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