Question

a) Is ethanoic acid a weak electrolyte or a strong electrolyte, give a reason for your answer. Show the dissociation of ethanoic acid in water.

Answer 1

Answer:

Acetic acid is a weak electrolyte because its dissociation constant is small meaning there will be few ions in solution to conduct electricity.

Answer 2

Weak electrolyte are very less or partially ionized and strong electrolytes are completely ionized or 100% ionized. Ethanoic acid is weak electrolyte.

How to determine whether a acid is weak or strong electrolyte ?

To determine whether the acid is strong electrolyte or weak electrolyte check whether it is completely ionize or partially ionized. The molecular formula of ethanoic is $CH_3COOH$ and ethanoic acid is also called acetic acid. Ethanoic acid is weak electrolyte because it does not dissociate very much.

The dissociation of ethanoic acid in water:

$CH_{3}COOH_{(aq)} + H_{2} O_{(l)}$ ⇄ $CH_{3}COO^{-}_{(aq)} + H_{3}O^{+}_{(aq)}$

Thus, from above conclusion we can say that Ethanoic acid is weak electrolyte and the dissociation of ethanoic acid in water is:  $CH_{3}COOH_{(aq)} + H_{2} O$ ⇄ $CH_{3}COO^{-}_{(aq)} + H_{3}O^{+}_{(aq)}$

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