Question

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?

Answer 1

`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`...