A Level Chemistry F324 Unit 4: Arenes II

Molecular formula: C6H5OH

In A level chemistry, presence of -OH gives a higher electron density as lone pair from O joins delocalised ring. Also increases solubility as it can form H bonds with water.

Reactions to form salts

• With NaOH: C6H5OH + NaOH -> C6H5O-Na+ + H2O
• With Na: 2C6H5OH +2Na -> 2C6H5O-Na+ + H2

You need to remember two main points of Bromination in A level chemistry curriculum:

• Reacts at room temp with no heat to form 2,4,6-tribromophenol
• Increased reactivity due to -OH lone pair and inc e- density which is able to depolarise Br2

There are some application of phenol in A level chemistry : Antiseptics, paint resins, detergent, asprin

End of this topic!

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