The strength of 11.2 volume solution of H_2O_ | vedclass

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(A) The decomposition reaction of $H_2O_2$ is: $2H_2O_2 	o 2H_2O + O_2 \uparrow$From the stoichiometry,$2 	imes 34 \ g = 68 \ g$ of $H_2O_2$ produce

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$3.4$

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(A) The decomposition reaction of $H_2O_2$ is: $2H_2O_2 	o 2H_2O + O_2 \uparrow$From the stoichiometry,$2 	imes 34 \ g = 68 \ g$ of $H_2O_2$ produces $22.4 \ L$ of $O_2$ at $STP$.Therefore,$11.2 \ L$ of $O_2$ is produced by $\frac{68 \ g}{22.4 \ L} 	imes 11.2 \ L = 34 \ g$ of $H_2O_2$.This means $34 \ g$ of $H_2O_2$ is present in $1 \ L$ $(1000 \ mL)$ of the solution.Strength in $g/L = 34 \ g/L$.Percentage strength = $\frac{	ext{Strength in } g/L}{10} = \frac{34}{10} = 3.4\%$.

The strength of $11.2$ volume solution of $H_2O_2$ is: [Given that molar mass of $H = 1 \ g \ mol^{-1}$ and $O = 16 \ g \ mol^{-1}$]

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