4.1 Oxidation and Reduction

Which of the following is the correct definition for redox reactions?

• Transfer of electrons

• Transfer of protons (H+)

• Two soluble salts form and insoluble salt

• Two reactants for one product

Match the terms with their definition.

• Oxidising agent

• Oxidation

• The loss of electrons

• The substance that undergoes Oxidation

• The gain of electrons

• Reduction

• Reducing agent

• The substance that undergoes Reduction

• Half equations

• A balanced chemical equation which shows the loss or gain of electrons

Which term matches the following definition?
Definition: electron donor an its corresponding electron acceptor, the two species only vary by number of electrons

• Conjugate Redox Pairs

• Oxidation

• Reduction

• Reducing Agent (Reductant)

• Oxidising Agent (Oxidant)

The oxidising agent undergoes ​ (a)   and ​ (b)   electrons.

The reducing agent undergoes ​ (c)   and ​ (d)   electrons.

• reduction
• oxidation
• gains
• loses

Redox Reaction: Zn (s) + Cu²⁺ (aq) -> Zn²⁺ (aq) + Cu (s)

Match the following to the correct term.

• Zn (s) -> Zn²⁺ (aq) + 2e^-

• Oxidising Agent

• Zn (s)

• Reducing Agent

• Cu²⁺ (aq) + 2e^--> Cu (s)

• Reducing Half Equation

• Zn²⁺ (aq)

• Oxidation Half Equation

• Cu²⁺ (aq)

• Reducing Agent Conjugate Pair

Redox Reaction: Mg (s) + 2Ag⁺ (aq) -> Mg²⁺ (aq) + 2Ag (s)

Match the following to the correct term.

• Ag⁺ (aq)

• Reducing Agent

• Mg²⁺ (aq)

• Oxidation Half Equation

• Mg (s) -> Mg²⁺ (aq) + 2e^-

• Reducing Agent Conjugate Pair

• Ag⁺ (aq) + e^--> Ag (s)

• Reducing Half Equation

• Mg (s)

• Oxidising Agent

Redox Reaction: Fe (s) + 2H⁺ (aq) -> Fe²⁺ (aq) + H₂ (s)

Match the following to the correct term.

• Fe (s) -> Fe²⁺ (aq) + 2e^-

• Oxidation Half Equation

• 2H⁺ (aq) + e^--> H₂ (g)

• Reducing Agent

• H⁺ (aq)

• Reducing Half Equation

• Fe (s)

• Oxidising Agent

• H₂ (g)

• Oxidising Agent Conjugate Pair

Redox Reaction: 2Fe (s) + 3Cl_² (aq) -> 2FeCl_³ (s)
Which species in the oxidising agent?

• Fe (s)

• Cl₂ (aq)

• FeCl₃ (s)

Redox Reaction: 2Fe (s) + 3Cl_² (aq) -> 2FeCl_³ (s)
Which species in the reducing agent?

• Fe (s)

• Cl₂ (aq)

• FeCl₃ (s)

Redox Reaction: Mg (s) + 2Br^- (aq) -> MgBr₂ (s)
Which species in the reducing agent?

• Mg (s)

• Br^- (aq)

• MgBr₂ (s)