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 = 2.5 molV = 5 LT = 30 °CP = ?

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

n = 2.5 molV = 5 LT = 30 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 1.5 molV = 50 LT = 105 °CP = ?

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

n = 1.5 molV = 50 LT = 105 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
480 g of CH₄V = 10 LT = 10 °CP = ?

A tank of 10 L contains 480 g of CH₄ at 10 °C. Treat it as an ideal gas and find the pressure P.

m = 480 gM = 16.04 g/molV = 10 LT = 10 °CR = 8.314 J/(mol·K)
P = kPa
4.Medium
160 g of O₂P = 350 kPaT = 100 °CV = ?

What volume V does 160 g of O₂ occupy at 350 kPa and 100 °C? Treat it as an ideal gas.

m = 160 gM = 32 g/molP = 350 kPaT = 100 °CR = 8.314 J/(mol·K)
V = L
5.Hard
State 1State 2

A fixed amount of O₂ goes from 250 kPa, 2 L, 25 °C to 700 kPa and 120 °C. Find the new volume V2.

P1 = 250 kPaV1 = 2 LT1 = 25 °CP2 = 700 kPaT2 = 120 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of O₂ goes from 100 kPa, 5 L, 30 °C to 400 kPa and 140 °C. Find the new volume V2.

P1 = 100 kPaV1 = 5 LT1 = 30 °CP2 = 400 kPaT2 = 140 °C
V2 = L

Answer key

  1. 1. P = 1260 kPa
  2. 2. P = 94.32 kPa
  3. 3. P = 7045 kPa
  4. 4. V = 44.32 L
  5. 5. V2 = 0.9419 L
  6. 6. V2 = 1.704 L

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