A quantity of 10 g of an ideal gas is expanded at constant temperature until its pressure becomes half of the initial pressure. The quantity of 1.25 g of the rarefied gas occupies 50 ml at the same fi

Question

A quantity of 10 g of an ideal gas is expanded at constant temperature until its pressure becomes half of the initial pressure. The quantity of 1.25 g of the rarefied gas occupies 50 ml at the same final pressure and temperature. The initial volume of the gas was

Prashant Kotian · Accepted Answer

Correct answer: A. Total final V = 50 * (10/1.25) = 400 ml. Since P halved, V doubled. Initial V = 400/2 = 200 ml. Therefore, correct answer is A.

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