Question 1

Which of the following is a product when sodium peroxide ($$\mathrm{Na_2O_2}) $$reacts with water?

Accepted Answer

$$\mathrm{H_2O_2}$$

Question 2

What is the balanced chemical equation for the reaction of potassium superoxide ($$\mathrm{KO_2$}) $$with water?

Accepted Answer

$$2\mathrm{KO_2$} + 2\mathrm{H_2O} \rightarrow 2\mathrm{KOH} + \mathrm{H_2O_2} + \mathrm{O_2$}$$

Question 3

When barium peroxide ($$\mathrm{$$BaO_2$$}) $$reacts with hydrochloric acid ($$\mathrm{HCl}$$), which gas is produced?

Accepted Answer

$$\mathrm{H_2$}$$

Question 4

Which of the following statements correctly describes the products formed when a superoxide reacts with water?

Accepted Answer

A hydroxide, hydrogen peroxide, and oxygen gas are produced.

Question 5

What is the balanced equation for the reaction of sodium superoxide ($$\mathrm{$$NaO_2$$}) $$with water?

Accepted Answer

$$2\mathrm{$$NaO_2$$} + 2\mathrm{H_2O} \rightarrow 2\mathrm{NaOH} + \mathrm{H_2O_2} + \mathrm{O_2$}$$

Question 6

A patient is exposed to potassium superoxide ($$\mathrm{KO_2$}) in a $$confined space. Which product from its reaction with water is most beneficial for respiration?

Accepted Answer

$$\mathrm{O_2$}$$

Question 7

Which of the following is a distinguishing product when a peroxide reacts with acid, compared to its reaction with water?

Accepted Answer

$$\mathrm{H_2O_2}$$

Question 8

Complete and balance the following reaction: $$2\mathrm{$$CaO_2$$} + \mathrm{H_2SO_4} \rightarrow$$

Accepted Answer

$$2\mathrm{$$CaSO_4$$} + 2\mathrm{H_2O_2}$$

Question 9

Which of the following is the correct balanced equation for the reaction of barium peroxide ($$\mathrm{$$BaO_2$$}) $$with water?

Accepted Answer

$$\mathrm{$$BaO_2$$} + 2\mathrm{H_2O} \rightarrow \mathrm{Ba(OH)_2} + \mathrm{H_2O_2}$$

Question 10

When sodium superoxide ($$\mathrm{$$NaO_2$$}) $$reacts with acid, which of the following is a product?

Accepted Answer

$$\mathrm{H_2O_2}$$

Question 11

A rescue team uses potassium superoxide ($$\mathrm{KO_2$}) in $$breathing apparatuses. Which chemical reaction explains its use?

Accepted Answer

$$2\mathrm{KO_2$} + 2\mathrm{H_2O} \rightarrow 2\mathrm{KOH} + \mathrm{H_2O_2} + \mathrm{O_2$}$$

Question 12

Which of the following is NOT a product when sodium peroxide ($$\mathrm{Na_2O_2}) $$reacts with acid?

Accepted Answer

$$\mathrm{NaOH}$$

Question 13

If $$2\mathrm{Na_2O_2}$$ reacts with $$2\mathrm{H_2SO_4}$$, what are the products?

Accepted Answer

$$2\mathrm{Na_2SO_4} + 2\mathrm{H_2O_2}$$

Question 14

Which of the following best explains why superoxides are used in emergency oxygen generators?

Accepted Answer

They produce oxygen gas when reacting with water.

Question 15

What is the main difference in products between the reaction of a peroxide and a superoxide with water?

Accepted Answer

Superoxides produce hydrogen peroxide and oxygen gas, while peroxides produce only hydrogen peroxide.

Reactions of Peroxides and Superoxides with Water and Acids

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