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 = 15 LT = 75 °CP = ?

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

n = 4 molV = 15 LT = 75 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 3 molV = 15 LT = 0 °CP = ?

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

n = 3 molV = 15 LT = 0 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
30 g of N₂V = 5 LT = 75 °CP = ?

A tank of 5 L contains 30 g of N₂ at 75 °C. Treat it as an ideal gas and find the pressure P.

m = 30 gM = 28.01 g/molV = 5 LT = 75 °CR = 8.314 J/(mol·K)
P = kPa
4.Medium
330 g of CO₂V = 20 LT = 15 °CP = ?

A tank of 20 L contains 330 g of CO₂ at 15 °C. Treat it as an ideal gas and find the pressure P.

m = 330 gM = 44.01 g/molV = 20 LT = 15 °CR = 8.314 J/(mol·K)
P = kPa
5.Hard
State 1State 2

A fixed amount of CH₄ goes from 350 kPa, 5 L, 10 °C to 750 kPa and 120 °C. Find the new volume V2.

P1 = 350 kPaV1 = 5 LT1 = 10 °CP2 = 750 kPaT2 = 120 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of O₂ goes from 400 kPa, 20 L, 40 °C to 450 kPa and 140 °C. Find the new volume V2.

P1 = 400 kPaV1 = 20 LT1 = 40 °CP2 = 450 kPaT2 = 140 °C
V2 = L

Answer key

  1. 1. P = 771.9 kPa
  2. 2. P = 454.2 kPa
  3. 3. P = 620 kPa
  4. 4. P = 898.2 kPa
  5. 5. V2 = 3.24 L
  6. 6. V2 = 23.45 L

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