A student treats 9.4g of phenol with an excess of bromine water. What is the mass of the white precipitate (2,4,6-tribromophenol) formed?
Q1. A student treats 9.4g of phenol with an excess of bromine water. What is the mass of the white precipitate (2,4,6-tribromophenol) formed?
Answer: 33.1 g
Explanation: 9.4g Phenol is 0.1 mol; it reacts to form 0.1 mol of 2,4,6-tribromophenol (M.W 331). 9.4g fails because it ignores bromine mass.