DISTINGUISH_AND_IDENTIFY

DISTINGUISH_AND_IDENTIFY - Distinguish and Identify...

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Distinguish and Identify 90(I)4.(b) OH NH 2 X Y Outline tests involving observable colour changes to show that : (i) X is a phenolic compound ; (ii) Y is a primary aromatic amine. ( 2 marks ) 91(I)5.(b) Describe simple chemical tests which would enable a distinction to be made between X and phenylmethylamine ( C 6 H 5 CH 2 NH 2 ). Your answer should include chemical equations, reaction conditions and a description of any visible changes. CH 3 NH 2 X ( 4 marks ) 91(II)9.(a) Outline chemical tests which would allow you to distinguish between the compounds in the following pairs. Describe what you would observe in each case. ( 8 marks ) CH 3 Cl CH 2 Cl COOH OH CH 3 O C CH 3 O C OH CH 3 CH 3 CH 3 CH 2 CH 2 C H CH 2 OH CH 3 CH 3 CH 2 CH 2 (i) (ii) (iv) (iii)
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Distinguish and Identify 93(II)8.(a) Give a chemical test to distinguish one compound from the other in each of the following pairs. Your answer should include the reagents required, the observation expected, and the chemical equation(s) for each test. (i) CH 3 CH 2 COCH 2 CH 3 and CH 3 CH 2 OCH 2 CH 3 (ii) CH 3 CH 2 CH 2 CH 2 CHO and CH 3 CH 2 COCH 2 CH 3 CH 2 Cl Cl and OH CH 3 CH 2 OH and ( 12 marks ) 94(I)3.(a) (iii) Write equation(s) to show the reaction(s) ( if any ) of nitric(III) acid with C and D separately. CH 3 CH 2 CHCH 3 OH CH 3 CH 2 CH 2 NH 2 C D ( 2 marks ) (iv) The reaction(s) in (iii) can be used to distinguish between C and D . What observation(s) would you look for in this test ? ( 1 mark ) 95(II)7.(a) Suggest a chemical test to distinguish one compound from the other in each of the following pairs. Your answer should include the reagents used, the observation expected and the chemical equation(s) for each test. Cl Cl and (i) (iv) (iii)
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Distinguish and Identify 95(II)7.(a) CH 3 CH 2 CCH 2 CH 3 CH 3 CH 2 CH 2 CCH 3 O O CH 3 OH CH 2 OH CH 3 CH 2 CNHCH 2 CH 3 CH 3 CH 2 CCH 2 NHCH 3 O O (ii) (iii) (iv) and and and ( 12 marks ) 96(I)4.(b) Describe the experimental procedures of a chemical test that you would employ in order to demonstrate that a liquid sample is an aromatic primary amine. State the observation of your test. ( 4 marks ) 96(II)7.(c) Suggest a chemical test to distinguish one compound from the other in each of the following pairs. Your answer should include the reagents used and the observation expected. CHO O CH 2 Cl CH 2 I (i) and (ii) and ( 4 marks ) 97(I)4.(d) Suggest, with explanation, a chemical reaction which would enable 4- methylbenzoic acid and 4-methylphenol to be distinguished from each other. ( 2 marks )
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Distinguish and Identify 97(I)8.(c) For each of the following groups of compounds, suggest a chemical test which would enable each compound to be distinguished from the other(s). In your answer also give the changes that you would expect to observe for each compound. (i)
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DISTINGUISH_AND_IDENTIFY - Distinguish and Identify...

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