If 279 g of aniline is reacted with one equivalent of benzenediazonium chloride, the maximum amount of aniline yellow formed will be g. (nearest integer) (consider complete conversion).
Answer
591
Solution
Coupling occurs para to -NH2:
[figure]
[figure]
Aniline yellow (p-aminoazobenzene, C12H11N3): M = 197 g mol-1
Moles of aniline = 27993 = 3 mol; the ratio is 1 : 1, so 3 mol aniline yellow forms.
∴ Mass = 3 197 = 591 g
Answer: 591