Question

Consider the following sequence of reactions :

Molar mass of the product formed (A) is ______ g mol\(^{-1}\).

Hint:

In organic reaction sequences, focus on the transformations involving functional group changes and their effect on molecular mass.

Answer 1

Correct Answer: 154

Step-by-step reaction mechanism: \[ \text{NO}_2 \xrightarrow{\text{Sn + HCl}} \text{NO}_2 + \text{H}_2\text{O} \] \[ \text{NH}_2 \xrightarrow{\text{NaNO}_2, \text{HCl}} \text{NaNO}_2 + \text{HCl} \quad (0^\circ C) \] \[ \text{Cu}_2\text{Cl}_2 \xrightarrow{\text{Na, Ether}} \text{Product formed} \] \[ \text{The molar mass of the product formed is 154 g mol}^{-1} \]