Strength of a `H_2 O_2` solution is labelled as 1.79 N. its strength can also be expressed as closest to :

Options

A. 20 volume
B. 5 volume
C. 10 volume
D. 15 volume

Answer

C

Explanation

`2H_2O_2_((aq.)to 2H_2O(l) + O_2(g) `
It is a common trend that n-factor `(H_2O_2)` is taken as ‘2’
By the definition of volume strength of
`H_2O_2`
if we consume 1l of`1NH_2O_2` in the above equation we are using 1 gram equivalent of `H_2O_2 = 0.5` moles of `H_2O_2` (by using n-factor = 2)
This will produce `1/4` moles of `O_2` gas at N.T.P.
`=1/4xx22.4=5.6l` of `O_2` gas
i.e. 1l , 1N `H_2O_2` solution gives 5.6 l `O_2` at N.T.P.
Hence 1N `equiv` 5.6 ‘vol.’ `H_2O_2` solution
In the given question it is 1.76 N `H_2O_2` solution Hence volume strength = `5.6 xx` 1.79 , 10 volumes