Question

50 ml of 20v h2o2 is mixed with 10v h2o2. the volume strength of resulting solution is

Answer 1

The question does not state what volume of 10v H₂O₂ added. It is assumed to be also 50 mL.

Answer: -

20v H₂O₂ means that 1 litre of H₂O₂ solution would produce 20 litre of Oxygen.

Thus 50 mL of 20v H₂O₂ solution would produce $\frac{50/1000 litre}{1 litre}$ x 20 litre of Oxygen

= 1 litre of O 2

10v H₂O₂ means that 1 litre of H₂O₂ solution would produce 10 litre of Oxygen.

Thus 50 mL of 10v H₂O₂ solution would produce $\frac{50/1000 litre}{1 litre}$ x 10 litre of Oxygen

= 0.5 Litre

Thus total oxygen = 1 Litre +0.5 Litre =1.5 Litre

So 100 mL of resulting solution produces 1.5 Litres of oxygen.

Thus 1000 mL of resulting solution produces $\frac{1000 mL}{100 mL}$ x 1.5 Litres of oxygen.

= 15 Litres of oxygen.

Thus the strength of resulting solution = 15v H₂O₂