Phenol and bromine water Quiz
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5 questions, one answer each
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1. What is observed when excess bromine water is added to phenol?
- A. No change
- B. Orange colour persists and gas is evolved
- C. A yellow solution forms
- D. The orange colour disappears and a white precipitate forms
2. Why is phenol more reactive than benzene towards electrophiles?
- A. The oxygen lone pair is delocalised into the ring
- B. Phenol has more carbon atoms
- C. Phenol is a weaker acid
- D. The OH bond is non-polar
3. How many moles of HBr form from one mole of phenol and excess bromine water?
- A. 1
- B. 2
- C. 3
- D. 6
4. What is the type of the reaction of phenol with bromine water?
- A. Nucleophilic addition
- B. Electrophilic substitution
- C. Free radical substitution
- D. Elimination
5. 0.940 g of phenol (M = 94.0) is fully converted to 2,4,6-tribromophenol (M = 330.7). What is the maximum mass of product?
- A. 0.331 g
- B. 1.65 g
- C. 3.31 g
- D. 9.94 g