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KVPY2014ChemistrySome Basic Concepts of Chemistry

Complete reaction of 2.0 ~g of calcium (at. wt. = 40 ) with excess HCL produces 1.125 ~L of H ₂ gas. Complete reaction of the same quantity of another metal "M" with excess HCL produces 1.85 ~L of H ₂ gas under indentical conditions. The equivalent weight of "M" is closest to

Options

  1. A23
  2. B9
  3. C7
  4. D12

Correct answer

D. 12

Step-by-step solution

1.125 ~L of H ₂ produced by 0.1 equivalent of metal 1.85 ~L a of H ₂ will be produced by = 0.1 1.85 1.125 equivalents No of gram equivalent of metal array l = 2 Equivalent weight = 2 x 0.1 1.125 1.85= 2 x x=12.16 array

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