25 volume hydrogen peroxide means | vedclass

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(B) The term '$25$ volume' $H_2O_2$ means that $1 \, L$ of this solution will give $25 \, L$ of $O_2$ gas at $STP$ upon decomposition.$2H_2O_2(aq) \ri

Vedclass · Accepted Answer

$1 \, L$ marketed solution contains $75 \, g$ of $H_2O_2$.

Vedclass · Answer

(B) The term '$25$ volume' $H_2O_2$ means that $1 \, L$ of this solution will give $25 \, L$ of $O_2$ gas at $STP$ upon decomposition.$2H_2O_2(aq) ightarrow 2H_2O(l) + O_2(g)$From the stoichiometry,$2 	imes 34 \, g$ of $H_2O_2$ produces $22.4 \, L$ of $O_2$ at $STP$.So,$22.4 \, L$ of $O_2$ is produced by $68 \, g$ of $H_2O_2$.Therefore,$25 \, L$ of $O_2$ is produced by $\frac{68}{22.4} 	imes 25 \approx 75.89 \, g$ of $H_2O_2$.Rounding to the nearest value,$1 \, L$ of the solution contains approximately $75 \, g$ of $H_2O_2$.

$25$ volume hydrogen peroxide means

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