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 = 0.5 molV = 15 LT = 25 °CP = ?

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

n = 0.5 molV = 15 LT = 25 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 2.5 molV = 50 LT = 40 °CP = ?

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

n = 2.5 molV = 50 LT = 40 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
140 g of CO₂P = 550 kPaT = 90 °CV = ?

What volume V does 140 g of CO₂ occupy at 550 kPa and 90 °C? Treat it as an ideal gas.

m = 140 gM = 44.01 g/molP = 550 kPaT = 90 °CR = 8.314 J/(mol·K)
V = L
4.Medium
360 g of N₂P = 500 kPaT = 40 °CV = ?

What volume V does 360 g of N₂ occupy at 500 kPa and 40 °C? Treat it as an ideal gas.

m = 360 gM = 28.01 g/molP = 500 kPaT = 40 °CR = 8.314 J/(mol·K)
V = L
5.Hard
State 1State 2

A fixed amount of O₂ goes from 100 kPa, 5 L, 20 °C to 500 kPa and 120 °C. Find the new volume V2.

P1 = 100 kPaV1 = 5 LT1 = 20 °CP2 = 500 kPaT2 = 120 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of CH₄ goes from 150 kPa, 5 L, 20 °C to 550 kPa and 200 °C. Find the new volume V2.

P1 = 150 kPaV1 = 5 LT1 = 20 °CP2 = 550 kPaT2 = 200 °C
V2 = L

Answer key

  1. 1. P = 82.63 kPa
  2. 2. P = 130.2 kPa
  3. 3. V = 17.46 L
  4. 4. V = 66.92 L
  5. 5. V2 = 1.341 L
  6. 6. V2 = 2.201 L

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