The results from tests carried out on a white crystalline solid, X, are shown in the table. X is heated gently: X sublimes. X is shaken with $\text{H}_2\text{O}$: a colourless solution, Y, is produced. Y is warmed with $\text{NaOH}(aq)$: a gas is evolved. $\text{AgNO}_3(aq)$ is added to Y: a white precipitate, Z, is produced. Z is shaken with $\text{NH}_3(aq)$: a colourless solution is formed. What is X?
- Aaluminium bromide
- Baluminium chloride
- Cammonium bromide
- Dammonium chloride