Question

50 ml of $H_2{O}_2$ solution when titrated with 0.1 M $KMn{O}_4$ solution in acidic medium, volume required is 40 ml. Volume strength of $H_2{O}_2$ solution is

• A. 11.2
• B. 22.4
• C. 1.12
• D. 2.24

Answer 1

The correct option is D 2.24

Meqv of $KMn{O}_4$ solution $=0.1\times 5\times 40meqv=20meqv$
So, Meqv of $H_2{O}_2$ solution = 20 meqv $\therefore M\times vol\times n-fac=M\times 50\times 2=20$
So, Molarity of $H_2{O}_{2}solution=M=0.2M$
So, Volume strength of $H_2{O}_2$ solution $=11.2\times M=11.2\times 0.2=2.24volume$