MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryMole _ Equivalent ConceptPrevious Year Questions

The number of gram molecules of chlorine in 6.02×1025 hydrogen chloride molecule is (KCET 2007)

A.10

B.100

C.50✓ Correct

D.5

Explanation

23 6.023 10 x molecules are present in =1 mole 25 6.02 10 x molecules are present in 25 23 1 6.02 10 6.023 10 x x x = 100 moles 2 2 2 H Cl HCl → 2 moles of 2 1 HCl Cl → molecule 100 moles of 1 100 2 HCl x 2 50Cl molecules

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