Match the following pKa values:AcidpKa(a) Phe | vedclass

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(C) Acidity is inversely proportional to the $pKa$ value. $1$. Picric acid ($2,4,6$-trinitrophenol) is the strongest acid among the given options due

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$a-iii, b-iv, c-i, d-ii$

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(C) Acidity is inversely proportional to the $pKa$ value. $1$. Picric acid ($2,4,6$-trinitrophenol) is the strongest acid among the given options due to the presence of three electron-withdrawing $-NO_2$ groups,so it has the lowest $pKa$ value $(0.78)$. $2$. $p$-Nitrophenol is more acidic than phenol due to the $-I$ and $-M$ effect of the $-NO_2$ group $(pKa = 7.1)$. $3$. Phenol is more acidic than ethanol because the phenoxide ion is resonance stabilized $(pKa = 10)$. $4$. Ethanol is the least acidic $(pKa = 16)$. Therefore,the correct match is: $a-iii, b-iv, c-i, d-ii$.

Acid	$pKa$
$(a)$ Phenol	$(i)$ $16$
$(b)$ $p$-Nitrophenol	$(ii)$ $0.78$
$(c)$ Ethanol	$(iii)$ $10$
$(d)$ Picric acid	$(iv)$ $7.1$

Match the following $pKa$ values:
Acid $pKa$
$(a)$ Phenol $(i)$ $16$
$(b)$ $p$-Nitrophenol $(ii)$ $0.78$
$(c)$ Ethanol $(iii)$ $10$
$(d)$ Picric acid $(iv)$ $7.1$

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Match the following $pKa$ values:Acid$pKa$$(a)$ Phenol$(i)$ $16$$(b)$ $p$-Nitrophenol$(ii)$ $0.78$$(c)$ Ethanol$(iii)$ $10$$(d)$ Picric acid$(iv)$ $7.1$