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 = 3 molV = 15 LT = 50 °CP = ?

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

n = 3 molV = 15 LT = 50 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 4 molV = 20 LT = 10 °CP = ?

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

n = 4 molV = 20 LT = 10 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
380 g of CO₂V = 10 LT = 60 °CP = ?

A tank of 10 L contains 380 g of CO₂ at 60 °C. Treat it as an ideal gas and find the pressure P.

m = 380 gM = 44.01 g/molV = 10 LT = 60 °CR = 8.314 J/(mol·K)
P = kPa
4.Medium
360 g of CH₄P = 150 kPaT = 80 °CV = ?

What volume V does 360 g of CH₄ occupy at 150 kPa and 80 °C? Treat it as an ideal gas.

m = 360 gM = 16.04 g/molP = 150 kPaT = 80 °CR = 8.314 J/(mol·K)
V = L
5.Hard
State 1State 2

A fixed amount of CO₂ goes from 400 kPa, 5 L, 40 °C to 650 kPa and 250 °C. Find the new volume V2.

P1 = 400 kPaV1 = 5 LT1 = 40 °CP2 = 650 kPaT2 = 250 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of N₂ goes from 200 kPa, 2 L, 35 °C to 150 kPa and 90 °C. Find the new volume V2.

P1 = 200 kPaV1 = 2 LT1 = 35 °CP2 = 150 kPaT2 = 90 °C
V2 = L

Answer key

  1. 1. P = 537.3 kPa
  2. 2. P = 470.8 kPa
  3. 3. P = 2392 kPa
  4. 4. V = 439.3 L
  5. 5. V2 = 5.14 L
  6. 6. V2 = 3.143 L

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