Moderate

If 1/V is plotted on X-axis and pressure on Y-axis at constant temperature what should appear ________________?

Correct answer: C. Straight line

  • A. Straight line parallel to x-axis
  • B. Straight line parallel to y-axis
  • C. Straight line
  • D. Curve

Explanation

At constant temperature, Boyle's law gives PV = constant, so P = constant x 1/V. Therefore, plotting P on the y-axis against 1/V on the x-axis produces a straight line through the origin. The likely wrong choice is d, caused by remembering the curved P versus V graph instead of the linear P versus 1/V graph.

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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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