The mass of benzanilide obtained from the benzoylation reaction of 5.8 g of aniline, if yield of product is 82 % , is _ _ _ _ g (nearest integer). (Given molar mass in g mol ⁻¹ H : 1, C : 12, ~N : 14, O : 16 )

Step-by-step solution

Benzoylation of aniline: C₆H₅NH₂ + C₆H₅COCl C₆H₅CONHC₆H₅ + HCl Molar mass of aniline: M = 6(12) + 7(1) + 14 = 93 g/mol Moles of aniline: n = 5.8 93 = 0.0624 mol Molar mass of benzanilide ( C₁₃H₁₁NO ): M = 13(12) + 11(1) + 14 + 16 = 197 g/mol Theoretical mass of benzanilide: m_ theoretical = 0.0624 197 = 12.29 g Actual mass with 82% yield: m_ actual = 12.29 0.82 = 10.08 10 g