Solve for the following problem. Write the given and solution.

Question

2. At 2.02 atm and 17oC, a constant pressure tank has 255 L of propane. What is the Volume of the gas at 49oC?

3. A given mass of Hydrogen occupies 20 L at 0.79 atm. What volume will it occupy at 1.50 atm?

Answer 1

Constant pressure = Charles' Law

V1/T1 = V2/T2

V1 = initial volume = 255 L

T1 = initial temperature in Kelvin = 17ºC + 273 = 290K

V2 = final volume = ?

T2 = final temperature in Kelvin = 49ºC + 273 = 322K

Solving for V2 we have ...

V2 = V1T2 / T1

V2 = (255 L)(322K) / 290

V2 = 283 L