There have been made 2 attempts of oxygen production by potassium permanganate. In the first attempt they have got 75ml oxygen in 3 minutes whearas there have been got 100ml in 5 minutes by the 2nd attempt. In what case the speed of the oxygen production is bigger??? Pls explain your answer

The speed of oxygen production is bigger in the first attempt.

Explanation:

In the first attempt, since 75ml oxygen is produced in 3 minutes, the rate of oxygen production is r = volume of oxygen/time = 75 ml/3 min = 25 ml//min

In the second attempt, since 100ml oxygen is produced in 5 minutes, the rate of oxygen production is r' = volume of oxygen/time = 100 ml/5 min = 20 ml//min

Since r = 25 ml/min > r' = 20 ml/min, the speed of oxygen production is bigger in the first attempt.

the correct answer would be d. hope this !