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could you please help me with these questions. thank you so much 45. What is the...

could you please help me with these questions. thank you so much

45. What is the order of decreasing reactivity of aldehydes, esters and ketones? a. Aldehydes > esters >ketones b. Esters> al
50. Which of the following is a Lewis acid used in Organic Synthesis? a. HCI b. AICI c. HNO, H2SO d. KMnO 51. Which Lewis aci
45. What is the order of decreasing reactivity of aldehydes, esters and ketones? a. Aldehydes > esters >ketones b. Esters> aldehydes > ketones c. Ketones > esters > aldehydes d. Aldehydes > ketones> esters 46. Which of these will not catalyze the reaction of a weak nucleophile with the carbonyl group of an aldehyde or ketone? (Hint: Look for which is not a Lewis Acid) A) I' B) H,O. C) AlCl, D) BF, E) ZnCl2 47. The relationship of propanone and propen-2-ol (enol ) is designated by the term: a. Tautomers b. Resonance structures c. Stereoisomers d. Conformational isomers 48. A compound with formula C,H0O gives two signals only both singlets, in the 'H NMR spectrum. Which of these structures is a possible one for this compound? a. b. C. d. 49. What, in general, is the order of decreasing reactivity (most reactive to least reactive) of these carbonyl compounds towards nucleophilic reagents? a.I>II> V>II> IV c. V>III> I>II> IV d. II> I> V> III>IV
50. Which of the following is a Lewis acid used in Organic Synthesis? a. HCI b. AICI c. HNO, H2SO d. KMnO 51. Which Lewis acid is used in Friedel Crafts reactions a. FeBr, b. FeCl, c. AICI d. BH 52. The Primary reaction product of aniline and 3-pentanone with loss of water is: at 53. Which are the products of hydrolysis of this compound? OD O-
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㊥(B) H3o (4t) @) +지utomers : イ8) 2 o H

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