Question

When $9.65$ ampere current was passed for $1.0$ hour into nitrobenzene in acidic medium, the amount of $p-$ aminophenol produced is :
(molar mass of $p-$ aminophenol $=109\,g/mole$ )

• A. $10.9\,g$
• B. $98.1\,g$
• C. $109.0\,g$
• D. $9.81\,g$

Answer 1

Answer: (D)

Moles of $e^{-}=\frac{9 . 65 \times 3600}{96500}=0.36$
$4$ moles $e^{-}$ reduce $1$ mole nitrobenzene
$0.36$ moles $e^{-}$ reduce $ \rightarrow 0.09$ mole nitrobenzene
Mass $=0.09\times 109$
$=9.81\,g$