Gas Law Chemistry

Question

1) 25 moles of gas are contained in a 500 L container at a temperature of 100◦C. What is the pressure for this gas?

Answer 1

Use the Ideal Gas Law for this (PV = nRT)

Pressure always in atm

Volume always in L

n = moles

R = gas constant 0.0821 L * atm / mol * K

T = temperature in Kelvin (convert celsius to Kelvin by +273)

P(500L) = (25 moles)(0.0821 L * atm / mol * K)(373 K)

Isolate P by dividing 500L on right side

P = (25)(0.0821)(373) / 500

P = 1.5 atm