What is the volume occupied by one mole of any ideal gas at standard temperature and pressure (STP, 0 deg C and 1 atm)?
Answer and explanation
Correct answer: D. 22.4 Liters
- Step 1: From ideal gas equation V = n R T / P with n = 1, T = 273.15 K, P = 1 atm, R = 0.0821 L atm / (mol K). Step 2. V = (1)(0.0821)(273.15) / 1 = 22.414 Liters (approx 22.4 L). Answer: 22.4 Liters. Why not the others: 24.8 L is the molar volume at 25 deg C (SATP); 20.0 L is an approximation error; 22.7 L is at 1 bar pressure.
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