JEE Mains · Chemistry · STD 12 - 7. Alcohol, phenol and ethers
What amount of bromine will be required to convert 2 g of phenol into 2,4,6-tribromophenol? (Given molar mass in \(\mathrm{g} \mathrm{mol}^{-1}\) of \(\mathrm{C}, \mathrm{H}, \mathrm{O}, \mathrm{Br}\) are \(12,1,16,80\) respectively )
- A 20.44 g
- B 4.0 g
- C 6.0 g
- D 10.22 g
Answer & Solution
Correct Answer
(D) 10.22 g
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \text { Moles of phenol }=\frac{2}{94}=0.021 \\ & \therefore \text { Moles of bromine }=0.021 \times 3=0.064 \\ & \therefore \text { Mass of bromine }=0.064 \times 160=10.22 \mathrm{~g}\end{aligned}\)
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