The pressure of 1 mol of gas is decreased to 0 point 5 atm at 273 cap k What happens to the molar volume of the gas under these conditions?

At constant temperature, the ideal gas law gives molar volume as Vₘ = RT/P, so it is inversely proportional to pressure. At 273 K, lowering the pressure from 1 atm to 0.5 atm doubles the molar volume: 1 ÷ 0.5 = 2. The molar volume is doubled, choice D.

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