Ideal gas law worksheet with answers

Free printable Ideal gas law worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

New worksheetPractise online with hints

For teachers: free to print, copy and use in class. Every new worksheet has new values and its own answer key. A link to ExamProblems on your course page is appreciated.

Name: ____________________   Date: ____________

1.Easy
n = 5 molV = 50 LT = 30 °CP = ?

A rigid tank holds an ideal gas. Find its pressure P.

n = 5 molV = 50 LT = 30 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 3 molV = 15 LT = 50 °CP = ?

A rigid tank holds an ideal gas. Find its pressure P.

n = 3 molV = 15 LT = 50 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
290 g of O₂V = 50 LT = 10 °CP = ?

A tank of 50 L contains 290 g of O₂ at 10 °C. Treat it as an ideal gas and find the pressure P.

m = 290 gM = 32 g/molV = 50 LT = 10 °CR = 8.314 J/(mol·K)
P = kPa
4.Medium
500 g of CH₄P = 650 kPaT = 95 °CV = ?

What volume V does 500 g of CH₄ occupy at 650 kPa and 95 °C? Treat it as an ideal gas.

m = 500 gM = 16.04 g/molP = 650 kPaT = 95 °CR = 8.314 J/(mol·K)
V = L
5.Hard
N₂, M = 28.01 g/molP = 200 kPaT = 110 °Cρ = ?

Find the density ρ of N₂ at 200 kPa and 110 °C, treating it as an ideal gas.

M = 28.01 g/molP = 200 kPaT = 110 °CR = 8.314 J/(mol·K)
ρ = kg/m³
6.Hard
State 1State 2

A fixed amount of CO₂ goes from 300 kPa, 10 L, 40 °C to 700 kPa and 230 °C. Find the new volume V2.

P1 = 300 kPaV1 = 10 LT1 = 40 °CP2 = 700 kPaT2 = 230 °C
V2 = L

Answer key

  1. 1. P = 252 kPa
  2. 2. P = 537.3 kPa
  3. 3. P = 426.7 kPa
  4. 4. V = 146.8 L
  5. 5. ρ = 1.759 kg/m³
  6. 6. V2 = 6.886 L

Full step-by-step solutions: practise this topic on examproblems.com.