AP EAMCET · Chemistry · Ionic Equilibrium
Which of the following has more \(\mathrm{pK}_{\mathrm{a}}\) value?
- A 2-Nitrophenol
- B 3-Nitrophenol
- C 4-Nitrophenol
- D 2, 4-Dinitrophenol
Answer & Solution
Correct Answer
(B) 3-Nitrophenol
Step-by-step Solution
Detailed explanation
Greater \(\mathrm{pK}_{\mathrm{a}}\) value means smaller \(\mathrm{K}_{\mathrm{a}}\) or weaker acid. Due to the presence of an electron-withdrawing \(-\mathrm{NO}_2\) group at the meta position, 3- nitrophenol is the weakest acid among the given options. The effect of…
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