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Question

What is the n-factor / valency factor of H2CO3 ?


  1. 1

  2. 2

  3. Either a or b

  4. Neither a nor b


Solution

The correct option is C

Either a or b


In this case of H2CO3 valency factor changes depending upon the reaction as the number of H+ ions replaced might vary depending on the extent of the reaction.

H2CO3 H+HCO3 (n-factor =1)

H2CO3  2H+ +CO32 (n-factor = 2)

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