Suggest suitable reagents and conditions for this transformation.
How many stereoisomers have the same structural formula as piperic acid, including piperic acid itself?
Draw the skeletal formula of a stereoisomer of piperic acid that is not the same as the one shown above.
Suggest structures for the compounds that would be produced when piperic acid is treated with excess hot concentrated acidified $\text{KMnO}_4$.
Write down the expression for $K_w$.
Using your expression and the $K_w$ value from the Data Booklet, 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. Suggest why this value is different from your answer in (c)(ii).
How would you expect the basicity of piperidine to compare with that of ammonia? Explain your answer.
A $20.0\ \text{cm}^3$ volume of $0.100\ \text{mol dm}^{-3}\ \text{HCl}$ was added slowly to $10.0\ \text{cm}^3$ of $0.150\ \text{mol dm}^{-3}$ piperidine. Calculate the number of moles of $\text{HCl}$ left at the end of the addition.
Hence calculate $[\text{H}^+]$ and the pH at the end of the addition.
On the axes below, sketch the change in pH as a total of $20.0\ \text{cm}^3$ of $0.100\ \text{mol dm}^{-3}$ HCl is added. Make the end point clear.
From the list of indicators below, place a tick in the box next to the one most suitable for this titration.