National League for Nursing (NLN PAX) Practice Exam

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Question: 1 / 495

According to the Ideal Gas Equation (PV = nRT), what effect does an increase in pressure have on the volume of a gas if the temperature remains constant?

The volume increases

The volume decreases

The Ideal Gas Equation, expressed as PV = nRT, relates pressure (P), volume (V), the number of moles of gas (n), the universal gas constant (R), and temperature (T). When the temperature and the number of moles of gas are held constant, an increase in pressure will result in a decrease in volume. This relationship is derived from Boyle’s Law, which states that for a given amount of gas at a constant temperature, pressure and volume are inversely proportional.

Thus, if pressure increases while temperature remains constant, the only way to satisfy the equation is for the volume to decrease. This inverse relationship underscores the concept that as one variable increases, the other must decrease to maintain equilibrium in the gas system.

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The volume remains constant

The volume doubles

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