RCOOH - Carboxylic acids 90(I)1.(c) Acid/ALQ/P.1 E...

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Carboxylic acids Acid/ALQ/P.1 90(I)1.(c) E HOOC–CH 2 CH 2 CH 2 CH 2 –COOH (ii) Show how E , by reaction with suitable reagents, may be converted into an important commercial product. ( 2 marks ) 90(I)4.(c) Amides are generally prepared by reacting equimolar amounts of an amine and an acid halide. Calculate : (i) the mass ( in grams ) of Y required to react with 4.0 g of benzoyl chloride ( C 6 H 5 COCl ), and (ii) the percentage yield of the same reaction if 4.0 g of the amide product is obtained. Y 90(II)8.(a) It is suggested that the structure of a compound having the molecular formula C 12 H 11 ClO 4 is either A or B . Cl CH COOH COOH C CH 3 CH 3 CH COOH COOH C CH 3 CH 2 Cl A B (i) How would you show quantitatively, the presence of TWO acidic hydrogen atoms in the molecule ? (ii) How would you show the presence of a carbon-carbon double bond in the side chain ? (iii) How would you distinguish A from B in the laboratory ? (iv) Assuming the compound has the structure A, give the structural formula of the hydrogenation product from reaction with one mole of hydrogen. Would you expect the product to show optical activity ? Explain your answer. ( 9 marks ) 91(I)1.(e) Give all reagents and show how 1,4-dimethylbenzene may be converted into useful NH 2 ( Relative atomic masses : H, 1.0; C, 12.0; N, 14.0; O, 16.0; Cl, 35.5 ) ( 3 marks )
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Carboxylic acids Acid/ALQ/P.2 polyester. ( 3 marks )
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RCOOH - Carboxylic acids 90(I)1.(c) Acid/ALQ/P.1 E...

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