Question

Calculate the volume strength of a $\dfrac{N}{{10}}{\text{ }}{H_2}{O_2}$ solution.

Answer 1

Hint:Volume strength is volume of oxygen at STP given by one volume sample of hydrogen peroxide on heating. The oxygen at STP is used for concentration of hydrogen peroxide ${H_2}{O_2}$ . Hydrogen peroxide is a very mild or light antiseptic used to treat skin problems and also to rinse mouth in case of any irritations.

Complete step by step answer:
As we know that hydrogen peroxide is a mild antiseptic which is used for various skin treatment purposes is useful for household works and is not dangerous but if the intake is more it can cause irritation in eyes and on skin and may even cause burns.
This hydrogen peroxide on heating gives oxygen on STP and the volume of this oxygen is known as the volume strength Volume strength is used to express the concentration of ${H_2}{O_2}$ . As ${H_2}{O_2}$ is an antiseptic it is used for killing various types of viruses and bacteria. When ${H_2}{O_2}$ comes in contact with bacteria, it produces free oxygen radicals which destroys bacterial cells.
The reaction of hydrogen peroxide decomposition to give oxygen is:
$2{H_2}{O_2} \to 2{H_2}O + {O_2}$
Now, let’s solve the question
$\dfrac{N}{{10}}$ means $\dfrac{N}{{10}}g$ equivalent weight in $1L$ solution.
$N = \dfrac{{weight}}{\text{equivalent weight}}$
(equivalent weight for hydrogen peroxide ${H_2}{O_2} = 17g$)
$\therefore \dfrac{1}{{10}} = \dfrac{{weight}}{{17}}$
$ \Rightarrow weight = 17 \times \dfrac{1}{{10}}$
$ \Rightarrow weight = 1.7g$
Since $68g$ of ${H_2}{O_2}$ will produce $22.4L$ Oxygen
Therefore, $1.7g$ gives
$22.4 \times \dfrac{{1.7}}{{68}} = 0.56L$
Thus the volume strength of $\dfrac{N}{{10}}{\text{ }}{H_2}{O_2}$ is $0.56L$ which is the oxygen liberated at STP after decomposition on heating of ${H_2}{O_2}$.

Note:
Hydrogen peroxide and vinegar are a deadly combination. Even though both are used one after the other for cleaning purposes but one must not mix them together. Their mixture results in a very dangerous corrosive acid which is very harmful to the eyes, skin, nose and lungs.