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 = 2 molV = 50 LT = 150 °CP = ?

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

n = 2 molV = 50 LT = 150 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 3 molV = 20 LT = 130 °CP = ?

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

n = 3 molV = 20 LT = 130 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
490 g of N₂V = 50 LT = 80 °CP = ?

A tank of 50 L contains 490 g of N₂ at 80 °C. Treat it as an ideal gas and find the pressure P.

m = 490 gM = 28.01 g/molV = 50 LT = 80 °CR = 8.314 J/(mol·K)
P = kPa
4.Medium
90 g of N₂V = 5 LT = 75 °CP = ?

A tank of 5 L contains 90 g of N₂ at 75 °C. Treat it as an ideal gas and find the pressure P.

m = 90 gM = 28.01 g/molV = 5 LT = 75 °CR = 8.314 J/(mol·K)
P = kPa
5.Hard
State 1State 2

A fixed amount of N₂ goes from 150 kPa, 10 L, 30 °C to 700 kPa and 180 °C. Find the new volume V2.

P1 = 150 kPaV1 = 10 LT1 = 30 °CP2 = 700 kPaT2 = 180 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of CO₂ goes from 250 kPa, 20 L, 20 °C to 650 kPa and 200 °C. Find the new volume V2.

P1 = 250 kPaV1 = 20 LT1 = 20 °CP2 = 650 kPaT2 = 200 °C
V2 = L

Answer key

  1. 1. P = 140.7 kPa
  2. 2. P = 502.8 kPa
  3. 3. P = 1027 kPa
  4. 4. P = 1860 kPa
  5. 5. V2 = 3.203 L
  6. 6. V2 = 12.42 L

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