1.

The `-OH` group of an alcohol or of the `-COOH` group of a carboxylic acid can be replaced by `-Cl` usingA. phosphorus pentachlorideB. hypochlorus acidC. chlorineD. hydrochloric acid

Answer» Correct Answer - A
The `-OH` group of alcohol or the `-COOH` group of a carboxylic acid is replaced by `-Cl` using phosphorus pentachloride (i.e., `PCl_(5)`)
`underset("Alcohol")(ROH)+PCl_(5) rarr R Cl +POCl_(3)+HCl`
`underset("Acid")(RCOOH)+PCl_(5)rarr RCOCl +POCl_(3)+HCl`


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