- 2 A B B Draw Four 4 Isomers For Ester With Molecular Formula Of C H O2 And Identify Its Chain And Positional Is 1 (15.96 KiB) Viewed 82 times
- 2 A B B Draw Four 4 Isomers For Ester With Molecular Formula Of C H O2 And Identify Its Chain And Positional Is 2 (29.4 KiB) Viewed 82 times
- 2 A B B Draw Four 4 Isomers For Ester With Molecular Formula Of C H O2 And Identify Its Chain And Positional Is 3 (24.54 KiB) Viewed 82 times
3. . (a) ( (1) (ii) Define chirality center. (CH) (please provide appropriate citation) [1 mark] Consider the following structural formula: NH,CHCOOH CH, Redraw the above structure Label the chirality center by using an asterisk (*) (C3) [1 mark] (b) с (1) By using 3-dimensional formula, draw a pair of enantiomers for molecule in (ii). (C4) [1 mark] Which of the following compounds is optically active? Explain your answer. (C4) C1,C=CH(CH) NH,CHCOOH (CH,), C(NH, COOH CH(CH) B [2 marks] (i) State two conditions for geometrical isomerism to occur. (C2) [2 marks] (i) Determine whether the organic compound shown below can exhibit cis-trans isomerism? If the compound exhibit cis-trans isomerism, draw and give the reason (C4) [4 marks) CH.CH (c) Br
4. (a) Br Carbocation X and Y are formed as intermediates when compound A reacts with aqueous sodium hydroxide, NaOH (CH.),CCH.CH Carbocation (CH),CCH, Br + NaOH(aq) Compound A (CH),CCH Carbocation Y + Br (1) Classify carbocation X and Y. (C3) [2 marks] (in) Which carbocation is more stable? Explain. (C4) [3 marks) (b) By referring to the following structures: more on CH CH M P (0) Học–CH N Classify free radicals M, N and P. (C3) [3 marks) Arrange the free radicals in descending order of stability. Explain. (C4) [3 marks]