A sample of methane gas, CH₄(g), occupies a volume of 60.3 L at a pressure of 469 torr and a temperature of 29.3$\degree$C. What would be its temperature at a pressure of 243 torr and volume of 60.3 L?

Question

Quizplus · Accepted Answer

We can use the combined gas law to solve the problem: 
P1V1/T1 = P2V2/T2 
where P1, V1, and T1 are the initial pressure, volume, and temperature, respectively, and P2 and V2 are the new pressure and volume, respectively, that we want to find. Rearranging the equation, we get: 
T2 = T1 * P2 * V1 / (P1 * V2)

Plugging in the values, we get: 
T2 = 29.3F1F1F1S1F1F1F10C * 243 torr * 60.3 L / (469 torr * 60.3 L) = -116.5F1F1F1S1F1F1F10C

Note that the temperature is negative, which means that the gas has cooled down. Therefore, the correct answer is (A).

A Sample of Methane Gas, CH4(g), Occupies a Volume of 60.3

A Sample of Methane Gas, CH₄(g), Occupies a Volume of 60.3