14   7 Organic compounds containing nitrogen include amides, amines, amino acids and nitriles. (a) Propylamine, CH3CH2CH2NH2 , may be formed from either a nitrile or a halogenoalkane. (i) Give the reagent and essential condition for the formation of propylamine from a nitrile. Include an equation for the reaction. (2) .................................................................................................................................................................................................................................................................................... (ii) Give the reagent and essential conditions for the formation of propylamine from a halogenoalkane. Include an equation for the reaction. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (b) A compound produced a peak due to an N–H stretching vibration in its infrared spectrum with a wavenumber of 3220 cm–1. This compound could be (1) A an amide B an amine C either an amide or an amine D neither an amide nor an amine Turn over 15   *(c) Alanine and glycine are amino acids. Amino acid Structure alanine H N C C CH3 H O O H H glycine H N C C H H O O H H Compare and contrast the structures, optical activity and reactions with acids and bases of alanine and glycine. Include diagrams, structures and equations to illustrate your answer. 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Turn over 17   (d) Lysine and serine are two more amino acids. Amino acid Structure of amino acid lysine H N C C (CH2)4 H O O H H NH2 serine H N C C CH2 H O O H H OH Explain the difference in the volumes of 0.010 mol dm–3 hydrochloric acid required to completely react with separate 10.0 cm3 samples of aqueous lysine and of aqueous serine, both of concentration 0.010 mol dm–3. 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(Total for Question 7 = 14 marks)