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 = 45 °CP = ?

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

n = 4 molV = 15 LT = 45 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 4 molV = 50 LT = 65 °CP = ?

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

n = 4 molV = 50 LT = 65 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
110 g of O₂P = 300 kPaT = 25 °CV = ?

What volume V does 110 g of O₂ occupy at 300 kPa and 25 °C? Treat it as an ideal gas.

m = 110 gM = 32 g/molP = 300 kPaT = 25 °CR = 8.314 J/(mol·K)
V = L
4.Medium
400 g of O₂V = 5 LT = 0 °CP = ?

A tank of 5 L contains 400 g of O₂ at 0 °C. Treat it as an ideal gas and find the pressure P.

m = 400 gM = 32 g/molV = 5 LT = 0 °CR = 8.314 J/(mol·K)
P = kPa
5.Hard
State 1State 2

A fixed amount of N₂ goes from 200 kPa, 10 L, 35 °C to 700 kPa and 50 °C. Find the new volume V2.

P1 = 200 kPaV1 = 10 LT1 = 35 °CP2 = 700 kPaT2 = 50 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of He goes from 100 kPa, 2 L, 35 °C to 350 kPa and 230 °C. Find the new volume V2.

P1 = 100 kPaV1 = 2 LT1 = 35 °CP2 = 350 kPaT2 = 230 °C
V2 = L

Answer key

  1. 1. P = 705.4 kPa
  2. 2. P = 224.9 kPa
  3. 3. V = 28.4 L
  4. 4. P = 5677 kPa
  5. 5. V2 = 2.996 L
  6. 6. V2 = 0.933 L

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