Question

molecular weight of dibasic acid is W its Equivalent weight will be:-
I) W/2
2)W/3
3)W
4)3W

Answer 1

answer : W/2

explanation : molecular weight of dibasic acid is W.

we have to find equivalent weight.

basically, equivalent weight is the ratio of molecular weight to n-factor.

where n-factor is

• basicity for acid
• acidity for base
• number of oxidation change for redox reaction
• valency for metal etc..

here acid is dibasic so, basicity of acid is 2. then equivalent weight = molecular weight/basicity = Molecular weight/2

= W/2