The average rate of formation of O2 over the same time period is __________M min-1.

Question

For the decomposition of hydrogen peroxide in dilute sodium hydroxide at 20 °C

2 H₂O₂(aq)2 H₂O(l) + O₂(g)

the average rate of disappearance of H₂O₂ over the time period from t = 0 min to t = 400 min is found to be 4.18×10^-5 M min^-1.

The average rate of formation of O₂ over the same time period is __________M min^-1.

Answer 1

The reaction shows 2 moles of H₂O₂ producing 1 mole of O₂.

So it produces 1M O₂ per 2M H₂O₂ decomp. (1/2 as much)

4.18 x 10^-5 times 1/2

2.09 x 10^-5 M min^-1