Looking at an ion, how can you tell whether hydrolysis will occur or not?

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Looking at an ion, how can you tell whether hydrolysis will occur or not?

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Answer 1 · 2016-10-10T10:06:54

Cations of weak bases and Anions of weak acids are hydrolysed

Explanation:

If the ion is a cation that forms an weak base combining with required number of $OH^-$ ion/s in water then the its solution becomes acidic one due to hydrolysis. For example $Fe^(3+)$ ion

$Fe^(3+)+3H_2O->Fe(OH)_3+3H^+$

Again when an anion of a salt of weak acid interacts with water it combines with the $H^+$ ions of water thereby enhancing the number of $OH^-$ ions in water and thus it makes the solution basic in nature.
For example Acetate ion $CH_3COO^(-)$

$CH_3COO^(-)+H_2O->CH_3COOH+OH^-$

Inference

Cations of weak bases and Anions of weak acids are hydrolysed

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Looking at an ion, how can you tell whether hydrolysis will occur or not?

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Explanation:

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