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 = 3 molV = 15 LT = 115 °CP = ?

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

n = 3 molV = 15 LT = 115 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 1 molV = 10 LT = 130 °CP = ?

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

n = 1 molV = 10 LT = 130 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
460 g of N₂P = 300 kPaT = 30 °CV = ?

What volume V does 460 g of N₂ occupy at 300 kPa and 30 °C? Treat it as an ideal gas.

m = 460 gM = 28.01 g/molP = 300 kPaT = 30 °CR = 8.314 J/(mol·K)
V = L
4.Medium
470 g of CH₄V = 50 LT = 35 °CP = ?

A tank of 50 L contains 470 g of CH₄ at 35 °C. Treat it as an ideal gas and find the pressure P.

m = 470 gM = 16.04 g/molV = 50 LT = 35 °CR = 8.314 J/(mol·K)
P = kPa
5.Hard
State 1State 2

A fixed amount of He goes from 400 kPa, 5 L, 15 °C to 650 kPa and 130 °C. Find the new volume V2.

P1 = 400 kPaV1 = 5 LT1 = 15 °CP2 = 650 kPaT2 = 130 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of O₂ goes from 300 kPa, 20 L, 10 °C to 500 kPa and 130 °C. Find the new volume V2.

P1 = 300 kPaV1 = 20 LT1 = 10 °CP2 = 500 kPaT2 = 130 °C
V2 = L

Answer key

  1. 1. P = 645.4 kPa
  2. 2. P = 335.2 kPa
  3. 3. V = 138 L
  4. 4. P = 1501 kPa
  5. 5. V2 = 4.305 L
  6. 6. V2 = 17.09 L

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