Form 5 Chemistry Chapter 3: Redox Reaction (e)

Redox Reactions in Electrolytic Cell and Chemical Cell

Electrolysis of Molten Lead (II) Bromide

Cathode Anode

Overall Reaction

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Form 5 Chemistry Chapter 3: Redox Reaction (e)

Electrolysis of Copper (II) Sulphate Solution using Inert Electrodes

Cathode Anode

Overall Reaction

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Form 5 Chemistry Chapter 3: Redox Reaction (e)

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Form 5 Chemistry Chapter 3: Redox Reaction (e)

Electrolysis of Concentrated Sodium Chloride Solution

Cathode Anode

Overall Reaction

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Form 5 Chemistry Chapter 3: Redox Reaction (e)

Electrolysis of Copper (II) Sulphate Solution using Copper Electrodes

Cathode Anode

Overall Reaction

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Form 5 Chemistry Chapter 3: Redox Reaction (e)

Redox Reactions in Chemical Cells

Daniell Cell

*The function of porous pot is to

a) separate the zinc sulphate solution from copper (II) sulphate solution

so that the solution do not mix

b) complete the electric circuit by allowing the ions to pass through it

Zinc is more electropositive than copper and is placed higher than copper

in the electrochmial series. Hence, zinc plate acts as the negative

electrode and copper plate act as the positive electrode.

Cathode Anode

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Form 5 Chemistry Chapter 3: Redox Reaction (e)

Overall Reaction

Essay Question

1. Magnesium is more reactive than copper. Design two experiments to

prove this statement. Your answer should include suitable ionic equations

and observations. (10 marks)

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Form 5 Chemistry Chapter 3: Redox Reaction (e)

2. Some substances act as an oxidising agent in one reaction but a

reducing agent in another reaction. Using iron (II) sulphate as an

example, describe how you would prove this statement. Your answer

should include suitable ionic equations. (10 marks)

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