Define enantiomers in chemistry.
Explain why a water solution of 2-aminobutane has a pH greater than 7. Include an equation in your response.
A $0.10\,\text{mol dm}^{-3}$ solution of diethylamine, $(\text{CH}_3\text{CH}_2)_2\text{NH}$, has a higher pH than a $0.10\,\text{mol dm}^{-3}$ solution of 2-aminobutane, $\text{CH}_3\text{CH(NH}_2)\text{CH}_2\text{CH}_3$. Suggest why.
$(\text{CH}_3\text{CH}_2)_2\text{NH}$ reacts with ethanoic acid, $\text{CH}_3\text{COOH}$. Complete the equation for this reaction: $(\text{CH}_3\text{CH}_2)_2\text{NH} + \text{CH}_3\text{COOH} \rightarrow \ldots$
$(\text{CH}_3\text{CH}_2)_2\text{NH}$ reacts with ethanoyl chloride, $\text{CH}_3\text{COCl}$. Complete the equation for this reaction: $(\text{CH}_3\text{CH}_2)_2\text{NH} + \text{CH}_3\text{COCl} \rightarrow \ldots$
Table 7.1 lists monomers that can undergo polymerisation. Complete Table 7.1.
Ethanedioic acid, $\text{HOOC-COOH}$, can react with propane-1,3-diamine, $\text{H}_2\text{NCH}_2\text{CH}_2\text{CH}_2\text{NH}_2$, to make polymer W. Draw one repeat unit of polymer W, showing only a single repeat unit. The new functional group formed should be displayed.
Poly(alkenes) biodegrade very slowly. Explain why.