Which of the following reagents can be used to convert benzenediazoniu – InterviewSolution

InterviewSolution

1.	Which of the following reagents can be used to convert benzenediazonium chloride into benzene ?A. `CH_(3)OH`B. `H_(3)PO_(2)`C. `Br_(2)//H(2)O`D. `LiAiH_(4)`
Answer» Correct Answer - B Hypophophorus acid (phosphinic acid) `H_(3)PO_(2)` reduces diazonium salts to arenes and gets oxidized to phosphoric acid `ArN_(2)^(+)Cl^(bar)+H_(3)Po_(2)+H_(2)Orarr ArH + N_(2)+H_(3)PO_(3)+HCI` Since benzenediazonium salts are synthesized in aqueous solution `LiAIH_(4)` can t be used for reduction as t reacts vigorously with water .

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