Anonymous posted an Question
September 12, 2020 • 06:00 am 170 points
  • IIT JAM
  • Chemistry (CY)

Two van der waals gases have the same value of b but different a values. which of these would occupy greater volume under identical conditions? if the gases h

Two van der Waals gases have the same value of b but different a values. Which of these would occupy greater volume under identical conditions? If the gases have the same a value but different values of b which would be more compressible?

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  • Suman Kumar best-answer

    If two gases have same value of b but different values of a, then the gas having a larger value a will occupy lesser volume. This is because the gas with a larger value of a will have a larger force of attraction, and hence lesser distance between its molecules. If two gases have the same value of a but different values of b, then the smaller the value of b, larger will be the compressibility because the gas with the smaller value of b will occupy lesser volume and hence will be more compressible.

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