Question

why is it that a salt formed from a weak acid and a strong base is alkaline

Answer 1

Answer: Here's your answer!!!!

Explanation:The salt formed from from weak acid(less H+ ions) and strong base(more OH- ions) is alkaline in nature as it contains more OH- ions in comparison of H+ ions so the resulant effect will be a base. Hence the salt formed is basic in nature(alkaline).

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Answer 2

Given:

Why is it that a salt formed from a weak acid and a strong base is alkaline?

To Find:

Why is it that a salt formed from a weak acid and a strong base is alkaline?

Solution:

The salt of a weak acid and strong base undergoes hydrolysis in water to produce additional $OH^{-}$ ions.  For example, sodium acetate in water is hydrolyzed as per the equation:

$Na^{+} + CH3COO^{-} + H2O = Na^{+} + CH3COOH + OH^{-}$.

Since acetic acid is a weaker acid, it remains unionized in solution, and the OH- ions make the solution basic or alkaline.