CARBONYL_COMPONDS

CARBONYL_COMPONDS - Carbonyl compounds CO/ALQ/P.1...

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Unformatted text preview: Carbonyl compounds CO/ALQ/P.1 91(II)7.(a) State with explanations, what you would observe in the following experiment, and write equation(s) for the reaction(s). (iv) Hexanal is treated with ammoniacal silver nitrate solution ( Tollens reagent ). ( 2 2 1 marks ) 92(II)8.(b) Describe how 2,4-dinitrophenylhydrazine may be used to identify an unknown ketone such as butanone. Give an equation for the reaction involved. ( 4 marks ) 92(II)9.(c) Hydrogen cyanide reacts with butanone to give an addition product. (i) Write a mechanism for the reaction. ( 2 marks ) 93(II)8.(b) Outline a mechanism for each of the following reactions, using curly arrows to show electron pair displacement, (i) 2-bromobutane with potassium cyanide, (ii) butanone with hydrogen cyanide. In each case state what type of reaction takes place, and give the expected product. ( 5 marks ) 94(I)4.(b) You are provided with a sample of an aliphatic aldehyde. Describe, with experimental details, the silver mirror test ( Tollens test ) that you would perform, in order to establish...
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CARBONYL_COMPONDS - Carbonyl compounds CO/ALQ/P.1...

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