(a(i))[2]
Describe, in terms of electron loss and gain, what occurs when a potassium atom reacts with an iodine atom.
(a(ii))[2]
Describe the structure of solid potassium iodide. A diagram may be included.
(a(iii))[2]
Explain why potassium iodide has such a high melting point.
(b(i))[4]
Describe how a pure, dry sample of lead iodide could be prepared from solid potassium iodide and solid lead nitrate.
(b(ii))[2]
Write an ionic equation for the formation of lead iodide, PbI$_2$, when potassium iodide and lead nitrate react together. State symbols are not required.
(c(i))[2]
State the colour change you would expect in this reaction.
(c(ii))[2]
Identify the reducing agent in this reaction. Explain your reasoning.