Question
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)
JEE Main
Chemistry
Amines
2026
JEE Main 2026 (22 January Shift 2)
JEE Main Chemistry Question (2026) — Solution
Options
- A. A
- B. B
- C. C
- D. D
Answer
A. A
Step-by-step solution
Benzoylation of aniline: C_6H_5NH_2 + C_6H_5COCl C_6H_5CONHC_6H_5 + 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 (C_ 13 H_ 11 NO): 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
Related: Chemistry — Amines · All PYQ Banks