ACE Your Redox Reactions
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One of the ways we discovered to know if a redox reaction has occurred, you will find that the oxidation numbers of two elements has changed from the reactant side to the product side an example is the formation of hydrogen fluoride. This quiz will test your understanding of redox reactions, including oxidizing and reducing agents. Give it a try and ace your redox reactions test.
- 1.Which change is oxidation?
- A.
Gain of electrons
- B.
Gain of hydrogen
- C.
Loss of oxygen
- D.
Loss of electrons
- 2.Which change is reduction?
- A.
A decrease in oxidation state
- B.
Gain of oxygen
- C.
Loss of electrons
- D.
Loss of hydrogen
- 3.
- A.
+3
- B.
-3
- C.
+6
- D.
-6
- 4.
- A.
Lead (II) ions are oxidized.
- B.
Magnesium atoms are oxidised.
- C.
Lead (II) ions lose electrons.
- D.
Magnesium atoms gain electrons .
- 5.
- A.
Argon
- B.
Oxygen
- C.
Carbon dioxide
- D.
Carbon monoxide
- 6.Which compound, when added to aqueous iron(II) sulphate, takes part in a redox reaction?
- A.
Ammonia
- B.
Barium chloride
- C.
Acidified potassium manganate (VII)
- D.
Sodium hydroxide
- 7.
- A.
An alkali
- B.
An indicator
- C.
An oxidising agent
- D.
A reducing agent
- 8.
- A.
-4
- B.
-2
- C.
+2
- D.
+4
- E.
+6
- 9.In which reaction is the first substance acting as a reducing agent?
- A.
Chlorine + iron(II) chloride ---> iron(III) chloride
- B.
Copper(II) oxide + hydrogen ---> copper + water
- C.
Hydrochloric acid + magnesium oxide ---> magnesium chloride + water
- D.
Carbon monoxide + zinc oxide ---> zinc + carbon dioxide
- 10.
- A.
An acid
- B.
A catalyst
- C.
A dehydrating agent
- D.
An oxidising agent
- E.
A reducing agent
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