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Write equation for the following chemica...

Write equation for the following chemical reactions :
(i) Phenol reacts with `Br_(2)` in the presence of `CS_(2)`
(ii) Ethanol is heated at 573 K in the presence of `Cu`.

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(ii) `underset("Ethanol")(CH_(3)-CH_(2)-OH) underset(573 K)overset(Cu)(rarr) underset("Ethene")(CH_(2)=CH_(2)+H_(2)O)`
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  16. Write the mechanism of dehydration of ethanol.

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