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Can someone please explain how you come to the answer?
I know the original molecule is a carboxylic acid, which has a pH near 5
Acids and Bases Practice Questions 1. Which structure corresponds to the predominant form of this molecule near pH 7? CH3-CH-C-OH NH2 CH:-CH-C-OH CH3-CH-C-O NH2 CH3-CH-C-0 NHs 1I CH-CH-C-OH NH2 2. Which is the strongest base? CHNH
Expert Answer
Answer
1)
Carboxylic has pKa near 5
So, when pH is more than 5, carboxylic acid will dissociate to give H+
pKb of NH2 is near 9
Since PH is 7 which is less than pKb, so ionised H+ will come and attach to NH3
This is the reason, answer is C
