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

To dissolve 0.9 g metal, 100 mL of 1N HCl is used. What is the equivalent weight of metal? (MP PMT 2010)

A.7

B.9✓ Correct

C.10

D.6

Explanation

1 N HCl solution means 36.5 g of HCl are dissolved in 1000 mL ( Equivalent weight of HCl=36.5) 100 ml of HCL solution contains HCl=3.65g Similarly 100 mL of HCl solution contains metal= 0.9 g. Now, Equivalent weight of metal Equivalent weight of acid weight of metal in solution Weight of acid in solution Equivalent weight of metal 36.5 0.9 36.5 36.5 Equivalent weight of metal 0.9 9 36.5 >> >> x Thus, the correct option is (b) 9.

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