How do you prepare the Acetyl chloride compound from acetic acid ?

Explanation

Acetyl chloride : Raction with `PCl_(3) ` (or) `PCl_(5)` (or) `SOCl_(2)` : Carboxylic acids form acid chlorides with `PCl_(3), PCl_(5), SOCl_(2).`
`CH_(3)COOH + PCl_(2) to CH_(3)COCl + POCl_(3) + HCl`
`3CH_(3)COOH + PCl_(3) to 3CH_(3)COCl + 3H_(3)PO_(3)`
`CH_(3)COOH + SOCl_(2) overset("Pyridine")to underset("Acetyl Chloride")(CH_(3)COCl + SO_(2)+HCl)`