CH-706
Catalysts
Chemistry · Secondary 3 · Hard · Catalysts
Hydrogen peroxide solution decomposes to form oxygen gas and water.
Experiment 1: 10 cm³ of hydrogen peroxide, no manganese(IV) oxide, 80 cm³ of oxygen collected in 300 s.
Experiment 2: same volume and conditions, but with 1.0 g of manganese(IV) oxide powder, 80 cm³ of oxygen collected in 120 s.
What does this show about manganese(IV) oxide?
Experiment 1: 10 cm³ of hydrogen peroxide, no manganese(IV) oxide, 80 cm³ of oxygen collected in 300 s.
Experiment 2: same volume and conditions, but with 1.0 g of manganese(IV) oxide powder, 80 cm³ of oxygen collected in 120 s.
What does this show about manganese(IV) oxide?
- It increases the total volume of oxygen produced.
- It increases the rate of reaction but not the amount of oxygen produced.
- It decreases the rate of reaction but increases the amount of oxygen produced.
- It is used up to form extra oxygen gas.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.