(a)[5]
Describe the physical properties of these substances by considering: • volatility • solubility in water • electrical conductivity when molten (liquid).
(b(i))[1]
Name the substance formed at the positive electrode.
(b(ii))[2]
Complete the word equation that represents this reaction.
(b(iii))[1]
Explain, in terms of halogen reactivity, why aqueous potassium chloride does not react with aqueous bromine.
(c)[1]
Name the change of state when liquid bromine becomes solid bromine.