At constant temperature, doubling the pressure on a fixed mass of gas will

Correct answer: B. halve its volume

  • A. double its volume
  • B. halve its volume
  • C. leave the volume unchanged
  • D. quadruple its volume

Explanation

Boyle's law states that pressure and volume are inversely proportional at constant temperature, so the product PV stays constant and doubling one halves the other. A graph of P against V is a hyperbola, while P against one over V is a straight line. This is why a syringe becomes hard to compress further as the volume shrinks.

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About Boyle's Law

Boyle's law states that the pressure of a fixed mass of gas varies inversely with its volume when temperature remains constant. Problems use the relationship P₁V₁ = P₂V₂, pressure-volume graphs and volume changes, with constant temperature distinguishing it from Charles's law.

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