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 = 2.5 molV = 10 LT = 140 °CP = ?

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

n = 2.5 molV = 10 LT = 140 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 2.5 molV = 15 LT = 75 °CP = ?

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

n = 2.5 molV = 15 LT = 75 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
270 g of N₂P = 800 kPaT = 45 °CV = ?

What volume V does 270 g of N₂ occupy at 800 kPa and 45 °C? Treat it as an ideal gas.

m = 270 gM = 28.01 g/molP = 800 kPaT = 45 °CR = 8.314 J/(mol·K)
V = L
4.Medium
340 g of CO₂P = 350 kPaT = 95 °CV = ?

What volume V does 340 g of CO₂ occupy at 350 kPa and 95 °C? Treat it as an ideal gas.

m = 340 gM = 44.01 g/molP = 350 kPaT = 95 °CR = 8.314 J/(mol·K)
V = L
5.Hard
State 1State 2

A fixed amount of Ar goes from 400 kPa, 5 L, 10 °C to 550 kPa and 100 °C. Find the new volume V2.

P1 = 400 kPaV1 = 5 LT1 = 10 °CP2 = 550 kPaT2 = 100 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of N₂ goes from 400 kPa, 20 L, 15 °C to 400 kPa and 180 °C. Find the new volume V2.

P1 = 400 kPaV1 = 20 LT1 = 15 °CP2 = 400 kPaT2 = 180 °C
V2 = L

Answer key

  1. 1. P = 858.7 kPa
  2. 2. P = 482.4 kPa
  3. 3. V = 31.87 L
  4. 4. V = 67.56 L
  5. 5. V2 = 4.792 L
  6. 6. V2 = 31.45 L

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