Chemistry 0620 · IGCSE · Electrolysis

Electrolysis — practice question

Potassium iodide is classified as an ionic compound.
(a)[2]

State two properties shown by an ionic compound.

(b(i))[2]

Name the substances produced at the positive and negative electrodes.

(b(ii))[1]

State the name given to the positive electrode in an electrolysis experiment.

(c)[2]

Deduce how many protons and neutrons are present in the iodide ion shown $^{127}_{53}\text{I}^-$.

(d(i))[2]

Complete this symbol equation for the reaction. Cl$_2$ + 2KI → …… + ….KCl

(d(ii))[1]

Select from the list the name of this reaction type. addition combustion displacement neutralisation

(d(iii))[1]

State the colour of chlorine gas at room temperature and pressure conditions.

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