31. Which of the following acids is the stronges? p-nitrobenzoic acid (pKa 3.4)

Question

31. Which of the following acids is the stronges? p-nitrobenzoic acid (pKa 3.4) D) octanoic acid (pKa 4.89) E) water 4.74) B) acetie acid (ethanoic acid) (pKa C) hexanoic acid (pKa-4.88 hilie acyl substitution reactions ides are most easily synthesized by D) carboxylic acids E) acyl chlorides 32. Esters and amides are most easily with A) alcohols B) nitriles C) carboxylates 33. What are the products of the following reaction? A) CH,CH B) CH,OH +CH,CH.OH NHCH CH,CH NCH,) + CH,OH CH,CH CH,CH.0H 34. What is the product of the following reaction? COOH A. L B. C. IV. O 0 hCH2OH

Explanation / Answer

31)

The stronger acid will have larger ka and hence smaller pKa

pKa of water is 7.0

smallest pKa is form A

So, it is strongest acid

Answer: A

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