(a)[1]
Deduce the empirical formula for vitamin C.
(b(i))[1]
Calculate the amount, in mol, of $\text{I}_2(\text{aq})$ that was added during the titration.
(b(ii))[2]
Use your answer to (b)(i) to work out the percentage by mass of vitamin C in $150.0\,\text{g}$ of lemon.
(b(iii))[1]
Complete Table 5.1 to show which, if any, of these absorptions would appear in the infrared spectrum of $M$.