GCEChemistryStates of Matter and Gas Laws2019

At constant temperature, the pressure of a gas is doubled. What happens to its volume?

AThe volume doubles
BThe volume remains the same
CThe volume is halvedCORRECT
DThe volume increases by a quarter
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Why the answer is C, and why the others tempt you.
Boyle's Law states that at constant temperature, pressure and volume are inversely proportional (PV = constant). If pressure is doubled, the volume must be halved to maintain the product PV constant. This is one of the fundamental gas laws.
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