Explain what stereoisomerism means.
Deduce how many stereoisomers $V$ has. Explain your reasoning.
Deduce the molecular formula of $V$.
Name all the functional groups present in $V$.
Identify the role of reagent T for each functional group that reacts in reaction 1.
Suggest the identity of reagent U in reaction 2.
Part of the mass spectrum for Q is shown in Fig. 6.4. Only peaks with $m/e$ greater than 198 are shown. Calculate the relative abundance, $x$, of the peak at $m/e = 201$. Show your working.
Q contains only hydroxyl functional groups. Complete Table 6.1 to show the observations that occur when 2,4-dinitrophenylhydrazine (2,4-DNPH reagent) is added to separate samples of Y and Q.
Under certain conditions, $0.0020\ \text{mol}$ of Q reacts with an excess of sodium to produce a total of $44.8\ \text{cm}^3$ of gas at s.t.p. Calculate the number of hydroxyl groups present in a molecule of Q. Show your working.
Use Table 6.2 to describe and explain two differences between the infrared spectrum of Y and Q in the region above $1500\ \text{cm}^{-1}$.
Under certain conditions, $0.0020\ \text{mol}$ of Q reacts with an excess of sodium to produce a total of $44.8\ \text{cm}^3$ of gas at s.t.p. Calculate the number of hydroxyl groups present in a molecule of Q. Show your working.
Use Table 6.2 to describe and explain two differences between the infrared spectrum of Y and Q in the region above $1500\ \text{cm}^{-1}$.