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 = 1 molV = 25 LT = 55 °CP = ?

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

n = 1 molV = 25 LT = 55 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 3 molV = 15 LT = 5 °CP = ?

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

n = 3 molV = 15 LT = 5 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
190 g of O₂V = 10 LT = 0 °CP = ?

A tank of 10 L contains 190 g of O₂ at 0 °C. Treat it as an ideal gas and find the pressure P.

m = 190 gM = 32 g/molV = 10 LT = 0 °CR = 8.314 J/(mol·K)
P = kPa
4.Medium
30 g of CH₄P = 750 kPaT = 35 °CV = ?

What volume V does 30 g of CH₄ occupy at 750 kPa and 35 °C? Treat it as an ideal gas.

m = 30 gM = 16.04 g/molP = 750 kPaT = 35 °CR = 8.314 J/(mol·K)
V = L
5.Hard
State 1State 2

A fixed amount of N₂ goes from 100 kPa, 10 L, 15 °C to 500 kPa and 220 °C. Find the new volume V2.

P1 = 100 kPaV1 = 10 LT1 = 15 °CP2 = 500 kPaT2 = 220 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of Ar goes from 350 kPa, 5 L, 10 °C to 600 kPa and 70 °C. Find the new volume V2.

P1 = 350 kPaV1 = 5 LT1 = 10 °CP2 = 600 kPaT2 = 70 °C
V2 = L

Answer key

  1. 1. P = 109.1 kPa
  2. 2. P = 462.5 kPa
  3. 3. P = 1348 kPa
  4. 4. V = 6.389 L
  5. 5. V2 = 3.423 L
  6. 6. V2 = 3.535 L

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