explain why an aqueous solution of sodium sulphate is neutral while an aqueous solution os sodium carbonate is basic in nature?
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I'm Rajdeep...
Do you know what is hydrolysis?
When water is added to salts, they give their respective acids and respective bases from which they are formed.....
In an aqueous solution of sodium sulphate, when sodium sulphate is hydrolysed, we get sodium hydroxide(NaOH) and sulphuric acid (H2SO4). Note that NaOH is a strong alkali and H2SO4 is a strong acid...both make each other neutral..hence Na2SO4 solution is neutral.
On the other hand, when sodium carbonate is hydrolysed, we get sodium hydroxide(NaOH) and carbonic acid(H2CO3).
Note that NaOH is a string alkali but H2CO3 is a weak acid. Hence the influence of NaOH is more in the solution, due to which the solution is basic....
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I'm Rajdeep...
Do you know what is hydrolysis?
When water is added to salts, they give their respective acids and respective bases from which they are formed.....
In an aqueous solution of sodium sulphate, when sodium sulphate is hydrolysed, we get sodium hydroxide(NaOH) and sulphuric acid (H2SO4). Note that NaOH is a strong alkali and H2SO4 is a strong acid...both make each other neutral..hence Na2SO4 solution is neutral.
On the other hand, when sodium carbonate is hydrolysed, we get sodium hydroxide(NaOH) and carbonic acid(H2CO3).
Note that NaOH is a string alkali but H2CO3 is a weak acid. Hence the influence of NaOH is more in the solution, due to which the solution is basic....
Thanks...
Please follow to get more answers!!
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