JAMB and WAEC Chemistry questions: Electrolysis

41 questions with answers and explanations. Tap an option to check yourself.

All topics Acids, bases and salts · 58 Air · 37 Atomic structure and bonding · 59 Chemical combination · 58 Chemical equilibrium · 37 Chemistry and industry · 35 Electrolysis · 41 Energy changes · 38 Environmental pollution · 32 Kinetic theory of matter and gas laws · 45 Metals and their compounds · 47 Non-metals and their compounds · 45 Organic compounds · 72 Oxidation and reduction · 41 Rates of chemical reaction · 38 Separation of mixtures and purification · 42 Solubility · 36 Water · 39

Question 1· Electrolysis· JAMB
How much charge is needed to deposit 1 mole of aluminium from Al³⁺ ions? (F = 96 500 C/mol)
Explanation and discussion
Question 2· Electrolysis· JAMB
When a spoon is electroplated with silver, the spoon is made the
Explanation and discussion
Question 3· Electrolysis· WAEC
During the electrolysis of dilute sulphuric acid with platinum electrodes, the gas at the anode is
Explanation and discussion
Question 4· Electrolysis· JAMB
Oxidation always takes place at the
Explanation and discussion
Question 5· Electrolysis· WAEC
In the purification of copper, the impure copper is made the
Explanation and discussion
Question 6· Electrolysis· WAEC
Electroplating is used to
Explanation and discussion
Question 7· Electrolysis· JAMB
During the electrolysis of dilute sulphuric acid with platinum electrodes, the gas liberated at the cathode is:
Explanation and discussion
Question 8· Electrolysis· JAMB
An electrolyte is a compound that
Explanation and discussion
Question 9· Electrolysis· JAMB
Faraday's second law of electrolysis states that, for the same quantity of electricity, the masses of different substances liberated are proportional to their
Explanation and discussion
Question 10· Electrolysis· WAEC
To electroplate an iron spoon with silver, the spoon is made the
Explanation and discussion
Question 11· Electrolysis· WAEC
In the electrolysis of molten sodium chloride, sodium is formed at the
Explanation and discussion
Question 12· Electrolysis· WAEC
Electrolysis of concentrated brine gives at the cathode
Explanation and discussion
Question 13· Electrolysis· JAMB
In the electrolysis of concentrated sodium chloride solution (brine), the gas given off at the anode is
Explanation and discussion
Question 14· Electrolysis· JAMB
What mass of copper is deposited by 0.2 faraday of electricity from Cu²⁺ ions? (Cu = 64)
Explanation and discussion
Question 15· Electrolysis· JAMB
In the electrolytic refining of copper, pure copper is deposited on the
Explanation and discussion
Question 16· Electrolysis· WAEC
Which of these is a non-electrolyte?
Explanation and discussion
Question 17· Electrolysis· WAEC
The mass of copper deposited by 0.2 mol of electrons (Cu = 64, Cu²⁺) is
Explanation and discussion
Question 18· Electrolysis· WAEC
The positive electrode in electrolysis is the
Explanation and discussion
Question 19· Electrolysis· JAMB
When dilute tetraoxosulphate(VI) acid is electrolysed with platinum electrodes, the products are
Explanation and discussion
Question 20· Electrolysis· WAEC
In the electrolysis of acidified water, the gas given off at the anode is
Explanation and discussion

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JAMB and WAEC Chemistry questions: Electrolysis

How much charge is needed to deposit 1 mole of aluminium from Al³⁺ ions? (F = 96 500 C/mol)

When a spoon is electroplated with silver, the spoon is made the

During the electrolysis of dilute sulphuric acid with platinum electrodes, the gas at the anode is

Oxidation always takes place at the

In the purification of copper, the impure copper is made the

Electroplating is used to

During the electrolysis of dilute sulphuric acid with platinum electrodes, the gas liberated at the cathode is:

An electrolyte is a compound that

Faraday's second law of electrolysis states that, for the same quantity of electricity, the masses of different substances liberated are proportional to their

To electroplate an iron spoon with silver, the spoon is made the

In the electrolysis of molten sodium chloride, sodium is formed at the

Electrolysis of concentrated brine gives at the cathode

In the electrolysis of concentrated sodium chloride solution (brine), the gas given off at the anode is

What mass of copper is deposited by 0.2 faraday of electricity from Cu²⁺ ions? (Cu = 64)

In the electrolytic refining of copper, pure copper is deposited on the

Which of these is a non-electrolyte?

The mass of copper deposited by 0.2 mol of electrons (Cu = 64, Cu²⁺) is

The positive electrode in electrolysis is the

When dilute tetraoxosulphate(VI) acid is electrolysed with platinum electrodes, the products are

In the electrolysis of acidified water, the gas given off at the anode is