(a(i))
Sodium metal reacts with X and a colourless, flammable gas is formed. What does this tell you about the functional groups that may be in X?
(a(ii))
X shows no reaction when it is treated with sodium hydrogencarbonate, $\text{NaHCO}_3$. What does this tell you about the functional groups that may be present in X?
(a(iii))[3]
X is shaken with aqueous bromine and the orange colour vanishes. What does this tell you about the functional groups that may be present in X?
(b(i))[4]
Draw displayed formulae for each member of these two pairs of stereoisomers.
(b(ii))[2]
The four isomers of $X$ display two kinds of stereoisomerism. State the type shown by each pair. pair 1 ........................................................ pair 2 ........................................................