Question

A 5.0 cm3 solution of h2o2 liberates 0.508 g of i2 from an acidified ki solution. The strength of h2o2 solution in terms of volume strength at stp is :

Answer 1

Explanation:

Hence, the number of moles of H

2

O

2

= number of moles of iodine =

253.8 g/mol

0.508 g

=2.00×10

−3

mol

The molarity of H

2

O

2

solution is

5.0×10

−3

L

2.00×10

−3

mol

=0.4 M

The volume strength of hydrogen peroxide is 11.2 times its molarity.

It is equal to 11.2×0.4=4.48 V.