Question

•The pressure of a gas in a tank is 3.2 atm at 22°C. If temp rises to 60°C, what will the pressure be?

•A 5.00-L air sample has a pressure of 107 kPa at a temperature of -50.0°C. If the temperature is raised to 102°C and the volume expands to 7.00 L, what will the new pressure be?

•Helium at 23°C with a volume of 5.60 L at 2.45 atm is changed to a pressure of 8.75 atm and cooled to 15°C. What is the volume?

Answer 1

2. P = Ti P2 Tz Here P, = 3.2aton, T=22+273=295k T2 = 60+273 = 333K, P2 = PIT2 = 3.28 333 =3.612 aten T 295 PUI = P22 Ti Tа. Here ? = 107kPa, v1=5. L 7 = -504273=223k - 72=102+273=375k, V2=7Lg P2 = ? P2= PIVIT2 = 107X5X375 = 128.52 ke a Ti V2- 223 X 7 PIVI = PzV2 To Tz Here P = 2.45 atm, V=5.60L, T = 23t273=2966 P2 = 8.75 aton, T2 = 15+273=2880, V2 = ? :: V2=PViT2 = 2.45 X 5.60x288 = 1:53 L - P2T, 8.75 X 296 Here P Pressure Vevolume to Temperature an kelvin