Question

one gram of dibasic acid is completely neutralized with 100 ml of 0.5N NAOH solution what is the molar mass of acid?

Answer 1

sorry kriti I already mess up with my concepts..hope I will answer next..

Answer 2

Answer: Molar mass of acid is 40 g/mol

Explanation:-

Normality is defined as the umber of gram equivalents dissolved per liter of the solution.

Normality of NaOH= 0.5 N

Volume= 100 ml = 0.1 L

$\text{no of gram equivalents}={\text{Normality}\times {\text{Volume in L}}$

$\text{no of gram equivalents of NaOH}={\text{0.5N}\times 0.1L=0.05gram equivalents$

As we know 1 gram As we know 1 gram equivalents of acid will react with 1gram equivalent of base.

Thus 0.05 gram equivalents of  base will react with  0.05 gram equivalent of acid.

${\text{no of gram equivalents of acid}}=\frac{\text {given mass}\times Basicity}{\text {Molar mass}}$

$0.05=\frac{1g\times 2}{\text {Molar mass}}$

Molar mass=40g/mol