A fixed amount of gas at 25.0°C occupies a volume of 10.0 L when the pressure is 629 torr. Use Charles's law to calculate the volume (L)the gas will occupy when the temperature is increased to 121°C while maintaining the pressure at 629 torr.
A)10.9
B)13.2
C)2.07
D)7.56
E)48.4

Question

Quizplus · Accepted Answer

Charles's law states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature. We can use the formula:

V1/T1 = V2/T2

Where V1 and T1 are the initial volume and temperature, and V2 and T2 are the final volume and temperature.

Substituting the values given in the problem, we get:

V1 = 10.0 L
T1 = 25.0 + 273 = 298 K
P = 629 torr
T2 = 121.0 + 273 = 394 K

V2 = (V1/T1) x T2 = (10.0/298) x 394 = 13.2 L

Therefore, the volume of the gas will be 13.2 L when the temperature is increased to 121°C while maintaining the pressure at 629 torr.

The correct answer is B) 13.2.

A Fixed Amount of Gas at 25