Question

The volume strength of the sample of \[{H_2}{O_2}\] is $8.96$ vol. The mass of \[{H_2}{O_2}\] present in $250ml$ of this solution is?
A) \[0.4g\]
B) \[27.2g\]
C) \[6.8g\]
D) \[108.8g\]

Answer 1

Hint: We have to know that it is expressed as $\dfrac{W}{V}$ percentage of \[{H_2}{O_2}\] in solution. Thus, \[30\% \]solution of \[{H_2}{O_2}\] means $30$ grams of\[{H_2}{O_2}\] are present in $100ml$ of solution in terms of volume. Hydrogen peroxide is a mild antiseptic used on the skin to prevent infection of minor cuts, scrapes, and burns.

Complete answer:
We will solve this question step by step. The volume strength is given which is $8.96$. The volume strength is to be divided by $5.6$ as the volume strength of hydrogen peroxide at standard quantities is $5.6$ which comes out to be the normality. The next step is to find the number of masses.
Volume strength is $8.96$
Normality\[ = \dfrac{{8.96}}{{5.6}} = 1.6\]
\[Normality \times Vol = Moles \times 2000\]
\[Moles = 0.2\]
\[Mass = 6.4gm\]
Hydrogen peroxide is a mild antiseptic used on the skin to prevent infection of minor cuts, scrapes, and burns. It may also be used as a mouth rinse to help remove mucus or to relieve minor mouth irritation. There are also many disadvantages of hydrogen peroxide, it is a highly powerful oxidizer and can react with many chemicals. When in contact with eyes, it causes irritation. Hydrogen peroxide slowly decomposes into water and oxygen. Hydrogen peroxide i.e. \[{H_2}{O_2}\] slowly decomposes to form water and oxygen gas. It is the volume of the oxygen gas liberated from the $1$ volume of \[{H_2}{O_2}\] solution.
For ex - If $10$ volume \[{H_2}{O_2}\] solution means that $1$ litre of this is \[{H_2}{O_2}\] solution will give $10$ litre of oxygen at STP.

Note:
We need to remember that volume strength or the percentage strength of hydrogen peroxide is the term which is used to express the concentration of hydrogen peroxide in the form of volume of oxygen which can decompose to form water and oxygen gas.