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

Options

A. `3% `
B. `0.5%`
C. `0.1% `
D. `0.15%`

Answer

A

Explanation

1L of 10 volume `H_2O_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_2O_2 = 68g`
Therefore, `10 L` of `O_2` at STP will be obtained from `H_2O_2 = (68 xx 10)/(22.4) = 30.36 g`
% strength of `H_2O_2 =3.03% `