Calculate the strength of the 5 volume H₂O₂ solution.

This is a short answer type question as classified in NCERT Exemplar

2H₂O₂ → 2H₂O+O₂

5 volume H₂O₂ means IL of H₂O₂ will give 5L of O₂ at STP.

On the basis of the equation it is clear that 22.7 L of O₂ is produced by 68 g of H₂O₂.

5L of O₂ is produced by = $\frac{68g*51}{22.71}$  = $\frac{3400}{227}$ = g of H₂O₂=14.9g

i.e. 15 g H₂O₂ dissolve