Gas Laws Assessment

Question

A sample of gas at 28.60 degrees Celsius and 698.2 mmHg occupies a volume of 36.75 Liters. What volume would it occupy at 52.43 degrees Celsius and 754.0 mmHg?

Answer 1

Hello, Olivia,

Use the modified form of the ideal gas law: P1V1/T1 = P2V2/T2, where P,V, and T are the pressure, volume, and temperature (in Kelvin). No gas is moved in or out of the system, so the values of n and R cancel from the ideal gas law, leaving this relationship. Be sure all units are consistent and the temperature is in Kelvin. Put this into a table and then solve for the unknown, V2 in this case.

Convert C to K by adding 273 before entering the numbers.

V2 = V1(T2/T1)(P1/P2)

I get an answer around 36.7 liters.

Bob