These tests are performed on an aqueous solution of salt X. Sodium hydroxide solution is then added, producing a green precipitate that dissolves in excess. Next, a small piece of aluminium foil is introduced into the mixture and the mixture is heated; a gas is released that turns damp, red litmus paper blue. What is X?
- Aaluminium nitrate
- Bammonium sulfate
- Cchromium(III) nitrate
- Diron(II) nitrate