The decreasing order of priority for the following functional groups in the IUPAC Nomenclature is…

The decreasing order of priority for the following functional groups in the IUPAC Nomenclature is $-\mathrm{SO}_3 \mathrm{H},-\mathrm{CN},-\mathrm{COOH},-\mathrm{OH}, \mathrm{CHO}$
  1. $-\mathrm{COOH}>-\mathrm{SO}_3 \mathrm{H}>-\mathrm{CN}>-\mathrm{CHO}>-\mathrm{OH}$
  2. $-\mathrm{SO}_3 \mathrm{H}>-\mathrm{COOH}>-\mathrm{CN}>-\mathrm{CHO}>-\mathrm{OH}$
  3. $-\mathrm{COOH}>-\mathrm{SO}_3 \mathrm{H}>-\mathrm{CHO}>-\mathrm{CN}>-\mathrm{OH}$
  4. $-\mathrm{SO}_3 \mathrm{H}>-\mathrm{COOH}>-\mathrm{CHO}>-\mathrm{CN}>-\mathrm{OH}$

Solution

The correct priority order according to their reactivity is: $-\mathrm{COOH}>-\mathrm{SO}_3 \mathrm{H}>-\mathrm{CN}>-\mathrm{CHO}>-\mathrm{OH}$

Asked in: AP EAMCET 2023 (17 May Shift 1)

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