JEE Advanced 2021 Paper 2 · Q10 · Mole Concept & Stoichiometry

Correct answer:1.23

Solution

From Q.9, moles of PhNH$_3$Cl = 0.01 mol, and 1 mol PhNO$_2$ gives 1 mol PhNH$_3$Cl. So moles of nitrobenzene reacted = 0.01 mol. Molar mass of nitrobenzene (C$_6$H$_5$NO$_2$) = 123 g mol$^{-1}$. Mass: $y = 0.01 \times 123 = 1.23$ g.

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