Question

The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is ______.

Options

• –COOH, –SO₃H, –CONH₂, –CHO

• –SO₃H, –COOH, –CONH₂, –CHO

• –CHO, –COOH, –SO₃H, –CONH₂

• –CONH₂, –CHO, – SO₃H, –COOH

Answer 1

The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is –COOH, –SO₃H, –CONH₂, –CHO.

Explanation:

The correct order of priority for the given functional group is:

\[\begin{array}{cc}
\phantom{.....................}\ce{O}\phantom{............}\ce{O}\phantom{.}\\
\phantom{.....................}||\phantom{.............}||\phantom{.}\\
\phantom{}\ce{-COOH > -SO3H > - C - NH2 > - C - H}
\end{array}\]