Describe the tests used to identify the following ions: a) Chloride, b) Sulphate, c) Potassium, d) Sodium and Bromide.

The bottle that produces a lilac flame contains potassium chloride.
The bottle that produces a persistent golden yellow flame contains sodium chloride.

A persistent golden yellow flame indicates the presence of sodium ions ($\text{Na}^+$).

A pale yellow precipitate with acidified silver nitrate indicates the presence of bromide ions ($\text{Br}^-$).

The precipitate being sparingly soluble in concentrated ammonia confirms the presence of bromide ions ($\text{Br}^-$).

The salt contains sodium ions ($\text{Na}^+$) and bromide ions ($\text{Br}^-$).
Name: Sodium bromide
Formula: NaBr