Question

which of the following acid has the same molecular weight and equivalent weight ? 1)H3po2 2)h3p03 3) h3po4 4)h2so4

Answer 1

Equivalent weight equal to molecular weight divided by n- factor.

n- factor in case of H3Po2 = 1

then Equivalent weight equal to molecular weight in case of H3 Po2

Answer 2

Answer:

$H_3PO_2$ acid has the same molecular weight and equivalent weight.

Option (1).

Explanation:

Molecular weight is "sum of atomic masses" of the atoms . The unit in which it is measured is Atomic mass units. "Equivalent weight" is the mass of substance which will either combine or replace some quantity of some other substance.

The Molar mass of the $H_3PO_2$ is 66 g/mol. The equivalent weight is $\frac{66}{1}$ .

In the case of acids, N-factor is the "number of $H^+$ ions" which are getting displaced by "1 mole of acid" in the reaction.