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.

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1.Easy
n = 4 molV = 5 LT = 130 °CP = ?

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

n = 4 molV = 5 LT = 130 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 0.5 molV = 5 LT = 70 °CP = ?

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

n = 0.5 molV = 5 LT = 70 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
300 g of O₂V = 30 LT = 30 °CP = ?

A tank of 30 L contains 300 g of O₂ at 30 °C. Treat it as an ideal gas and find the pressure P.

m = 300 gM = 32 g/molV = 30 LT = 30 °CR = 8.314 J/(mol·K)
P = kPa
4.Medium
10 g of N₂P = 450 kPaT = 60 °CV = ?

What volume V does 10 g of N₂ occupy at 450 kPa and 60 °C? Treat it as an ideal gas.

m = 10 gM = 28.01 g/molP = 450 kPaT = 60 °CR = 8.314 J/(mol·K)
V = L
5.Hard
State 1State 2

A fixed amount of He goes from 150 kPa, 20 L, 35 °C to 400 kPa and 190 °C. Find the new volume V2.

P1 = 150 kPaV1 = 20 LT1 = 35 °CP2 = 400 kPaT2 = 190 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of CH₄ goes from 300 kPa, 5 L, 20 °C to 100 kPa and 170 °C. Find the new volume V2.

P1 = 300 kPaV1 = 5 LT1 = 20 °CP2 = 100 kPaT2 = 170 °C
V2 = L

Answer key

  1. 1. P = 2681 kPa
  2. 2. P = 285.3 kPa
  3. 3. P = 787.6 kPa
  4. 4. V = 2.197 L
  5. 5. V2 = 11.27 L
  6. 6. V2 = 22.68 L

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