According to Boyle's law, what happens to the volume of an ideal gas when its pressure is tripled at constant temperature?
Answer and explanation
Correct answer: C. It decreases to one-third of its original volume
- Step 1: Boyle's law states that for a fixed mass of gas at constant temperature, pressure and volume are inversely proportional: .
- Step 2: If pressure increases by a factor of 3 (), volume must decrease by a factor of 3 ().
Answer
It decreases to one-third of its original volume.
Why not the others: 'It triples' implies direct proportionality; 'It increases nine-fold' squares the pressure factor; 'It remains constant' violates gas laws.
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