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 = 5 molV = 10 LT = 80 °CP = ?

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

n = 5 molV = 10 LT = 80 °CR = 8.314 J/(mol·K)
P = kPa
2.Easy
n = 1.5 molV = 20 LT = 15 °CP = ?

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

n = 1.5 molV = 20 LT = 15 °CR = 8.314 J/(mol·K)
P = kPa
3.Medium
90 g of CH₄P = 450 kPaT = 10 °CV = ?

What volume V does 90 g of CH₄ occupy at 450 kPa and 10 °C? Treat it as an ideal gas.

m = 90 gM = 16.04 g/molP = 450 kPaT = 10 °CR = 8.314 J/(mol·K)
V = L
4.Medium
460 g of HeP = 300 kPaT = 25 °CV = ?

What volume V does 460 g of He occupy at 300 kPa and 25 °C? Treat it as an ideal gas.

m = 460 gM = 4.003 g/molP = 300 kPaT = 25 °CR = 8.314 J/(mol·K)
V = L
5.Hard
State 1State 2

A fixed amount of He goes from 300 kPa, 2 L, 15 °C to 550 kPa and 80 °C. Find the new volume V2.

P1 = 300 kPaV1 = 2 LT1 = 15 °CP2 = 550 kPaT2 = 80 °C
V2 = L
6.Hard
State 1State 2

A fixed amount of N₂ goes from 200 kPa, 10 L, 25 °C to 600 kPa and 130 °C. Find the new volume V2.

P1 = 200 kPaV1 = 10 LT1 = 25 °CP2 = 600 kPaT2 = 130 °C
V2 = L

Answer key

  1. 1. P = 1468 kPa
  2. 2. P = 179.7 kPa
  3. 3. V = 29.35 L
  4. 4. V = 949.5 L
  5. 5. V2 = 1.337 L
  6. 6. V2 = 4.507 L

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