Question

a) b) c) Explain why the affinity of alkali metal ions for a cation exchange resin increases from Lit to Nat to K. [6 marks] Explain the physical basis for the separation of molecules in size exclusion chromatography. [6 marks) When a mixture of ethanol, n-propanol, n-butanol and n-pentanol (see Figure 5) is analysed by capillary gas-liquid chromatography, what order would you expect the compounds to elute? [2 marks] Explain your answer to part c). [2 marks] When an equimolar mixture of these compounds is analysed using a flame ionisation detector, the peak area in the chromatogram increases in the order ethanol <n-propanol < n-butanol <n-pentanol. Explain this observation. [4 marks) d) e) но CH3 HO CH3 ethanol n-butanol CH3 но CH3 но n-propanol n-pentanol Fig. 5. Chemical structures of alcohols discussed above.
answer for question b c,d and e only please.

Answer 1

Please find the ans in the pic.I have answered c and d together as they are in a part.