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KVPY2013ChemistryRedox Reactions

The amount of metallic Zn (Atomic weight =65.4) required to react with aqueous sodium hydroxide to produce 1 ~g of H ₂ , is

Options

  1. A32.7 ~g
  2. B98.1 ~g
  3. C65.4 ~g
  4. D16.3 ~g

Correct answer

A. 32.7 ~g

Step-by-step solution

Zn +2 OH ⁻+2 H ₂ O [ Zn ( OH ₄ ) ]²⁻+ H ₂2 ~gm (1 mole ) H ₂ is given by 65.4 ~gm of Zn 1 gm is given by 65.4 2 ~gm of Zn

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