MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryMole _ Equivalent ConceptPrevious Year Questions

A mixture of gases contains H and O gases in the ratio of 1 : 4 (w/w). What is the molar ratio of the two gases in the mixture ? (NEET 2015)

A.4 : 1✓ Correct

B.16 : 1

C.2 : 1

D.1 : 4

Explanation

Given, Let, the weight of hydrogen ( 2 H ) = 1x The weight of oxygen ( 2 O ) = 4x Molecular mass of hydrogen ( 2 H ) = 2 g Molecular mass of oxygen ( 2 O ) = 32 g Molar ratio = moles of hydrogen / moles of nitrogen = 1 1 32 2 4 :1 4 2 4 32 x x x Therefore, the molar ratio of hydrogen and oxygen is 4 : 1

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