JEE MAIN - Chemistry (2022 - 28th July Morning Shift - No. 9)
Among the following marked proton of which compound shows lowest $$\mathrm{pK}_{\mathrm{a}}$$ value?
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Explanation
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The conjugate base of compound (C) is stabilized by extended conjugation. Hence the indicated proton of compound $C$ is most acidic i.e. will have lowest $\mathrm{pK}_{\mathrm{a}}$.
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