(a)[1]
A small sample of ammonium iodide is heated in a test-tube. Describe how you would recognise that all the ammonium iodide has decomposed.
(b)[3]
Calculate the volume of gas, measured at room temperature and pressure, produced when 2.90 g of ammonium iodide is fully decomposed.
(c)[2]
Describe a chemical test for the iodide ion. Give both the reagent and the observation.
(d)[2]
Aqueous ammonium iodide is mixed with aqueous bromine. Construct the ionic equation, including state symbols, for this reaction.
(e)[2]
Solid ammonium iodide does not conduct electricity. Aqueous ammonium iodide does conduct electricity. Explain why these two observations occur.