Everyday uses of acids and alkalis 10.6 Everyday uses of acids and alkalis.
Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and...
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Transcript of Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and...
![Page 1: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/1.jpg)
PhenolsPhenols
![Page 2: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/2.jpg)
HW: Hw1 Q 5 (12 marks)
![Page 3: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/3.jpg)
L.O.:Describe the reactions of phenols with aqueous
alkalis and with sodium to form saltsDiscuss the roles of phenol as an early antisepticDescribe the reaction of phenol with bromine to
form 2,4,6-tribromophenolExplain the relative ease of bromination of
phenol compared to benzeneState the uses of phenols in plastics, antiseptics,
disinfectants and paints
![Page 4: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/4.jpg)
Phenol as an acid
Phenoxy ion
Phenol is weakly soluble in water and produces solutions with a pH of about 5 to 6
![Page 5: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/5.jpg)
• Reaction with sodium
![Page 6: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/6.jpg)
Uses of phenols
Found in:• surfactants and detergents• disinfectantsUsed to make • pharmaceuticals like aspirin• Epoxy resins found in paints
![Page 7: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/7.jpg)
Experiment: reaction of phenol with bromineExperiment: reaction of phenol with bromine
1) Write down 2 observations.
2)Name the product formed
3) Write a balanced equation
![Page 8: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/8.jpg)
![Page 9: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/9.jpg)
Explain the relative ease of Explain the relative ease of bromination of phenol compared to bromination of phenol compared to benzenebenzene
![Page 10: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/10.jpg)
Clue #1.
R-O-H
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• Clue #2
![Page 12: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/12.jpg)
Comparing the charge densities of phenol with benzene
Phenol Benzene
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• Clue #3.
Which structure can polarise bromine molecules?
![Page 14: Phenols. HW: Hw1 Q 5 (12 marks) L.O.: Describe the reactions of phenols with aqueous alkalis and with sodium to form salts Discuss the roles of phenol.](https://reader035.fdocuments.us/reader035/viewer/2022062422/56649f395503460f94c56442/html5/thumbnails/14.jpg)
Explain the relative ease of Explain the relative ease of bromination of phenol compared to bromination of phenol compared to benzene ( 3 marks + 1 Qwc)benzene ( 3 marks + 1 Qwc)
Lone pair of electrons on the oxygen atom → higher electron density in the ring → the increased electron density polarises bromine molecules.