Question

There are three samples of $H_2{O}_2$ labelled as $10vol.;15vol.;20vol.$ Half litre of each sample are mixed and then diluted with equal volume of water. Calculate volume strength of the resultant solution.

• A. $0.5$
• B. $2.68$
• C. $5.0$
• D. $7.5$

Answer 1

The correct option is A $0.5$

Volume strength

Means

$10$vol. Means $10$L Oxygen is present

$15$Vol. Means $15$L oxygen is present

$20$Vol. Means $20$L oxygen is present

Half of each volume are diluted.

So Total volume diluted is = ($10$+$15$+$20$)/$2$

= $22.5$L

Total volume of resultant solution = $10$+$15$+$20$=$45$L

Volume strength of resultant solution = $22.5$/$45$

= $0.5$