Chemistry - Ideal Gas Question with Solution | TestHub
ChemistryIdeal GasGraham's Law of Diffusion/EffusionMedium2 minQB
ChemistryMediumstatement
Statement 1: Graham's law is a limiting law, i.e., it is best applied at low pressures for gases.
Statement 2: Graham's law is valid only for ideal gases.
Options:
Answer:
C
Solution:
Statement 1 is correct: Graham's law of diffusion is exact only in the ideal-gas (low-pressure) limit, so it is a limiting law applied best at low pressures. Statement 2 is incorrect: the law is not restricted to ideal gases — real gases obey it well at low and moderate pressures (it was verified experimentally with real gases); they merely deviate increasingly at high pressure. The word "only" makes II false. Ans: (c).
Stream:JEESubject:ChemistryTopic:Ideal GasSubtopic:Graham's Law of Diffusion/Effusion
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