States of Matter - Result Question 45

####46. Select one correct statement. In the gas equation, PV=nRT

[1992]

(a) n is the number of molecules of a gas

(b) V denotes volume of one mole of the gas

(c) n moles of the gas have a volume V

(d) P is the pressure of the gas when only one mole of gas is present.

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Solution:

  1. (c) In the equation PV=nRT,n moles of the gas have volume V.

In van der Waals equation, n moles of gas occupies volume V and exert pressure P at a temperature T.



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