Find the percentage strength of `H_2O_2` in a sample marked “10 volumes.”

Options

A. 0.03
B. `0.5%`
C. `0.1%`
D. `0.15%`

Answer

A

Explanation

1 L of 10 volume `H_(2) O_(2) ` solution on decomposition gives 10 L of oxygen at STP Now, 22.4 L of `O_(2)`, at STP will be obtained from `H_(2),O_(2)` 68g
Therefore, 10 L of `O_(2)`, at STP will be obtained from `H_(2),O_(2),= (68xx10)/(22.4)=30.36g ` % strength of `H_(2),O_(2)`,= 3.03%