Question

of volume strength of h2o2 solutions is 16.8 v then molarity of h2o2 solutions will be​

Answer 1

Answer:

molecular weight of h2o2=34

molarity=strength/molecular weight

             =0.49 g/l

Answer 2

The molarity of H2O2 solutions will be 1.5 M

- The reaction of hydrogen peroxide can be written as :

2H2O2 ----> 2H2O +O2

- let the molarity of H2O2 be M.

- Now, we have a solution of M moles of H2O2 in 1L solution .

- From the reaction stoichiometry, 2 moles of H2O2 gives out 1 mole of oxygen = 22.4L at S.T.P

⇒1 mole of H2O2 = 11.2 L of O2

so, M mole of H2O2 = 11.2 x M L of O2

- 1 L of H2O2 gives 11.2 x M L of O2

i.e., Vol strength of H2O2 = 11.2 x M

- Putting the value, we get

16.8 = 11.2 x M

⇒M = 16.8/11.2

 M = 1.5 M