Question

If 279 g of aniline is reacted with one equivalent of benzenediazonium chloride, the mximum amount of aniline yellow formed will be _____ g. (nearest integer)
(consider complete conversion)

Answer 1

The balanced reaction is:
$\text{C}_6\text{H}_5\text{NH}_2 + \text{C}_6\text{H}_5\text{N}_2^+\text{Cl}^- \rightarrow \text{C}_6\text{H}_5\text{N} = \text{N} -\text{C}_6\text{H}_5 \, (\text{Aniline yellow}).$
Given:
$\text{Molar mass of aniline} = 93 \, \text{g/mol}, \quad \text{Given mass} = 279 \, \text{g}.$
Moles of aniline:
$n = \frac{279}{93} = 3 \, \text{mol}.$
Mass of aniline yellow:
$\text{Molar mass of product} = 197 \, \text{g/mol}.$
$\text{Mass} = 3 \cdot 197 = 591 \, \text{g}.$
Final Answer:
$591 \, \text{g}.$