Suggest reagents and conditions needed for this reaction.
How many stereoisomers have the same structural formula as piperic acid, piperic acid itself included?
Draw the skeletal structure of a stereoisomer of piperic acid that is different from the one shown above.
Suggest structures for the compounds formed when piperic acid is treated with an excess of hot concentrated acidified $\text{KMnO}_4$.
Write down the expression for $K_w$.
Use your expression together with the value of $K_w$ in the Data Booklet to calculate the pH of $0.150\ \text{mol dm}^{-3}\ \text{NaOH(aq)}$.
The pH of a $0.150\ \text{mol dm}^{-3}$ solution of piperidine is $11.9$. Explain why this result is different from your answer in part (c)(ii).
How would you expect the basicity of piperidine to compare with that of ammonia? Explain your reasoning.
$20.0\ \text{cm}^3$ of $0.100\ \text{mol dm}^{-3}$ HCl was slowly added to a $10.0\ \text{cm}^3$ sample of $0.150\ \text{mol dm}^{-3}$ piperidine. Calculate the number of moles of $\text{HCl}$ remaining at the end of the addition.
Hence calculate the $[\text{H}^+]$ and pH at the end of the addition.
On the axes below, sketch how the pH changes during the addition of a total of $20.0\ \text{cm}^3$ of $0.100\ \text{mol dm}^{-3}$ HCl. Clearly indicate the end point.
From the list of indicators below, place a tick in the box beside the indicator that is most suitable for this titration.