Ideal Gas Law

AP Chemistry· difficulty 1/5

T (K) P

For a fixed-volume sample of gas, the linear P vs T plot demonstrates:

  • A

    P and T are inversely related

  • B

    Pressure is directly proportional to absolute temperature

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  • C

    Pressure is independent of T

  • D

    Volume is inversely proportional to T

Explanation

At constant V and n, ideal gas behavior gives P/T = constant (Gay-Lussac's law); a straight line through origin confirms direct proportionality.

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