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Question
Solve the following.
Calculate the volume of 1 mole of a gas at exactly 20°C at a pressure of 101.35 kPa.
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Solution
Given:
n = number of moles = 1 mol,
P = pressure = 101.35 kPa = 1.00025 atm ≈ 1 atm
T = Temperature = 20°C = 20 + 273.15 K = 293.15 K
R = 0.0821 dm3 atm K–1 mol–1
To find: Volume (V)
Formula: PV = nRT
Calculation:
According to ideal gas equation,
PV = nRT
∴ V = `("nRT")/"P"`
∴ V = `(1xx0.0821xx293.15)/1`
∴ V = 24.07 dm3
The volume of the given gas is 24.07 dm3.
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