If the pressure of a gas is doubled while keeping the temperature constant, what happens to its volume?
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A.
It remains the same
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B.
It becomes four times
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C.
It becomes half
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D.
It doubles
Correct Answer:
C. It becomes half
Explanation:
According to Boyle's Law, the pressure and volume of a given mass of gas are inversely proportional when the temperature is held constant ($P \propto 1/V$ or $PV = k$). This relationship implies that if the pressure is increased, the volume must decrease by the same factor to maintain a constant product. Specifically, doubling the pressure ($2P$) results in the volume being reduced to exactly one-half ($V/2$) of its original state. Therefore, when pressure is doubled at a constant temperature, the volume becomes half.
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