Question

Calculate % (by mass) of a H₂O₂ solution which is 45.4 volume.

Answer 1

Given: 45.4 volume H₂O₂ solution
To find: % (by mass) of H₂O₂ 
Formula: Percentage (%) by mass  = \(\frac{mass\,of\,solute}{mass\,of\,solutiuon}\) x 100

calculation: 45.4 volume H₂O₂ solution means 1 L of this solution will liberate 45.4 L of O₂ at STP.

Hydrogen peroxide (H₂O₂ ) decomposes as:

% (by mass) of H₂O₂ in 45.4 volume H₂O₂ solution is 13.6%.