Question

What is the valency factor for bases in a given reaction?

• A. Number of OH^- ions in the base
• B. Number of replaceable OH^- ions in the base
• C. Number of replaced OH^- ions in the base after the reaction
• D. Number of electrons in the reaction

Answer 1

The correct option is C

Number of replaced OH^- ions in the base after the reaction

Valency factor / n - factor is a very useful conversion factor by which we divide the molar mass of a substance to get the equivalent mass and it depends on the nature of the substance which varies from one condition to another condition.
Examples of valency factor for bases:
(i) n-factor of NaOH = 1
(ii) n-factor of Zn$(OH{)}_2$ = 1 or 2 (depends on reaction)
(iii) n-factor of Ca$(OH{)}_2$ = 1 or 2 (depends on reaction)

(iv) n-factor of $N{H}_4$(OH) = 1