A fixed amount of gas at 25.0 °C occupies a volume of 8.66 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 112 °C while maintaining the pressure at 629 torr.

Question

Quizplus · Accepted Answer

According to Charles's law, at constant pressure, the volume of a gas is directly proportional to its temperature in Kelvin. Therefore, we need to convert the temperatures to Kelvin: 25.0 °C = 298 K and 112 °C = 385 K. Using 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, we can solve for V2:
V2 = (V1 × T2) / T1
V2 = (8.66 L × 385 K) / 298 K
V2 = 11.2 L (rounded to two significant figures)

A Fixed Amount of Gas at 25