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(D) The decomposition of hydrogen peroxide is represented as: $2H_2O_2 	o 2H_2O + O_2$.From the stoichiometry,$22.4 \ L$ of $O_2$ at $N.T.P.$ is prod

Vedclass · Accepted Answer

$3.035$

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(D) The decomposition of hydrogen peroxide is represented as: $2H_2O_2 	o 2H_2O + O_2$.From the stoichiometry,$22.4 \ L$ of $O_2$ at $N.T.P.$ is produced by $68 \ g$ of $H_2O_2$.For a $10$ volume solution,$10 \ L$ of $O_2$ is produced by $1 \ L$ of $H_2O_2$ solution.Mass of $H_2O_2$ in $1 \ L$ of solution $= \frac{68}{22.4} 	imes 10 = 30.35 \ g/L$.Strength in percentage $(\% w/v) = \frac{	ext{mass of solute in } g}{	ext{volume of solution in } mL} 	imes 100$.Strength $= \frac{30.35 \ g}{1000 \ mL} 	imes 100 = 3.035\%$.

There is a sample of $10$ volume of hydrogen peroxide solution. Calculate its strength in percentage (%).

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