At constant pressure, the temperature of a 4.0 L sample of gas is decreased from 50°C to 25°C. Calculate the new volume of the gas sample.
A) 2.00 L
B) 3.69 L
C) 4.34 L
D) 8.00 L

Question

Quizplus · Accepted Answer

According to Charles's Law, at a constant pressure, the volume of a gas is directly proportional to its absolute temperature. Therefore, V1/T1 = V2/T2. Converting both temperatures to Kelvin scale (add 273), we get V1/323 = V2/298. Solving for V2, we get V2 = V1 x T2/T1 = 4.0 x 298/323 = 3.69 L. Thus, the best choice is B) 3.69 L.

At Constant Pressure, the Temperature of a 4