Which of the following reagents is best employed to reduce benzene diazonium chloride directly to be — Aromatic Hydrocarbons Chemistry Question

💡 Solution & Explanation

Benzene diazonium chloride can be efficiently reduced to benzene using mild reducing agents such as hypophosphorous acid ($H_3PO_2$) with water, or using ethanol ($C_2H_5OH$). During this reaction, $H_3PO_2$ is oxidized to $H_3PO_3$ and nitrogen gas is released.