Chemistry 5070 · O Level · Electrolysis

Electrolysis — practice question

Calcium chloride, CaCl$_2$, is classified as an ionic compound.
(a)[2]

State the electronic configuration for each ion present in calcium chloride.

(b)[2]

For the electrolysis of molten calcium chloride, calcium and chlorine are made. Write equations for the two electrode reactions.

(c)[1]

Predict the products formed during the electrolysis of concentrated aqueous calcium chloride.

(d)[2]

Explain, using ideas about structure and bonding, why the melting point of calcium chloride is high.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: Calcium ion has electronic configuration 2.8.8

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