Question

11,12,13,14,15 pls

11) The most stable confermation of 3a a-ca e.caw ca in the back) 12) Which of the following structures has the S configurationP CH 10) A) Only I Only BOnly Il DI and t C)i and 13) Which compounds are achiral? CI Br H CH3 H H Br HC V IV II E)v D) l and IV C) II, l and IV AB)L Il and IV A) L. II and V 14) I and II are: O I1 D) Constitutional isomes C) Diastereomers B) Resonance structures A) Enantiomers 15) What is the total number of possible stereoisomers for the following molecule? -Co-H H D) 6 B) 3 A) 2 13) The most stable conformation of 2.3-dimethylpentane, viewed through the C-2-C-3 bond .e., C-2 in the front. c-3 in the back): сн. HC енсн CHy M- HyG . сн. H Снсн насн,с IV 12) Which of the following structures has the S configuration? сн,сн, сн.сH, H OH H.C CHy H Н,сн-с Cн Br 10) D) II and IIl E) Only II C) I and II A) Only B) Only II 13) Which compounds are achiral? CH Br H Br CI H H H "Br CH3 Br F F H Hас V IV Ш II D) III and IV C) II, III and IV Il and V B) I, IlI and IV

Answer 1

11. Conformation IV, less crowd compare to I.

12. Option B, II only priority order is in anticlockwise direction hence S configuration

13. Compounds I and V since they have plane of symmetry

14. Option D, Constitutional isomers since position of OH is different in both structures

15. Option A,2 only since it has only one chiral center.