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 = 50 LT = 30 °CP = ?

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

n = 0.5 molV = 50 LT = 30 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 3 molV = 25 LT = 60 °CP = ?

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

n = 3 molV = 25 LT = 60 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
290 g of N₂V = 30 LT = 55 °CP = ?

A tank of 30 L contains 290 g of N₂ at 55 °C. Treat it as an ideal gas and find the pressure P.

m = 290 gM = 28.01 g/molV = 30 LT = 55 °CR = 8.314 J/(mol·K)
P = kPa
4.Medium
260 g of N₂P = 250 kPaT = 85 °CV = ?

What volume V does 260 g of N₂ occupy at 250 kPa and 85 °C? Treat it as an ideal gas.

m = 260 gM = 28.01 g/molP = 250 kPaT = 85 °CR = 8.314 J/(mol·K)
V = L
5.Hard
State 1State 2

A fixed amount of O₂ goes from 300 kPa, 5 L, 20 °C to 100 kPa and 100 °C. Find the new volume V2.

P1 = 300 kPaV1 = 5 LT1 = 20 °CP2 = 100 kPaT2 = 100 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of Ar goes from 100 kPa, 5 L, 30 °C to 800 kPa and 90 °C. Find the new volume V2.

P1 = 100 kPaV1 = 5 LT1 = 30 °CP2 = 800 kPaT2 = 90 °C
V2 = L

Answer key

  1. 1. P = 25.2 kPa
  2. 2. P = 332.4 kPa
  3. 3. P = 941.6 kPa
  4. 4. V = 110.6 L
  5. 5. V2 = 19.09 L
  6. 6. V2 = 0.7487 L

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