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 = 0.5 molV = 40 LT = 85 °CP = ?

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

n = 0.5 molV = 40 LT = 85 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 1 molV = 15 LT = 75 °CP = ?

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

n = 1 molV = 15 LT = 75 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
210 g of O₂P = 550 kPaT = 70 °CV = ?

What volume V does 210 g of O₂ occupy at 550 kPa and 70 °C? Treat it as an ideal gas.

m = 210 gM = 32 g/molP = 550 kPaT = 70 °CR = 8.314 J/(mol·K)
V = L
4.Medium
350 g of CO₂P = 550 kPaT = 100 °CV = ?

What volume V does 350 g of CO₂ occupy at 550 kPa and 100 °C? Treat it as an ideal gas.

m = 350 gM = 44.01 g/molP = 550 kPaT = 100 °CR = 8.314 J/(mol·K)
V = L
5.Hard
State 1State 2

A fixed amount of N₂ goes from 200 kPa, 2 L, 15 °C to 350 kPa and 220 °C. Find the new volume V2.

P1 = 200 kPaV1 = 2 LT1 = 15 °CP2 = 350 kPaT2 = 220 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of O₂ goes from 200 kPa, 5 L, 35 °C to 150 kPa and 110 °C. Find the new volume V2.

P1 = 200 kPaV1 = 5 LT1 = 35 °CP2 = 150 kPaT2 = 110 °C
V2 = L

Answer key

  1. 1. P = 37.22 kPa
  2. 2. P = 193 kPa
  3. 3. V = 34.04 L
  4. 4. V = 44.86 L
  5. 5. V2 = 1.956 L
  6. 6. V2 = 8.289 L

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