Worksheet: Redox Reactions
In this worksheet, we will practice identifying redox reactions and writing ionic equations to describe electron transfer between oxidants and reductants.
Which of the following statements is true?
- AHydrogen ions can never act as a reducing agent.
- BAcid–base reactions always involve two different species.
- CAcid–base reactions always produce water.
- DMolecular oxygen can never act as a reducing agent.
- EReduction–oxidation reactions always produce at least two different species.
Which of the following is not an oxidation–reduction reaction?
A piece of magnesium oxide is heated with hydrogen until the magnesium is recovered. Is the magnesium oxide being oxidized or reduced?
Which of the following half-equations describes an oxidation?
Which of the following half-equations describes a reduction?
Cesium can be produced by reacting calcium with cesium chloride, according to the equation:
Which substance is being reduced?
Which substance is being oxidized?
A piece of magnesium left in air is gradually converted to magnesium oxide. Is this reaction an example of oxidation or reduction?
Consider the equation shown.
Which arrow shows reduction?
Which arrow involves the loss of electrons?
Which arrow involves the gain of electrons?
Which of the following statements about the following ionic equation is incorrect?
- AZinc atoms becoming zinc ions is oxidation.
- BZinc atoms becoming zinc ions is reduction.
- CSilver ions becoming silver atoms is reduction.
- DSilver ions gain electrons.
- EZinc acts as a reducing agent.