Question

What is the n-factor or the valency factor of $H_{2}C{O}_3$?

• A. 1
• B. 2
• C. Either a or b
• D. Neither a nor b

Answer 1

The correct option is C Either a or b

In this case of $H_{2}C{O}_3$ the valency factor changes depending upon the reaction as the number of $H^{+}$ ions replaced might vary depending on the extent of the reaction.
$H_{2}C{O}_3\to H^{+}+HC{O}_3^{-}(n-factor=1)$
$H_{2}C{O}_3\to 2H^{+}+C{O}_3^{2-}(n-factor=2)$