1.

Explain : 'Sodium carbonate solution is basic.'

Answer»

Solution :It is a SALT of strong base NaOH and weak ACID `H_2CO_3` therefore solution BECOME basic.
`Na_2CO_3 to 2Na^(+) +CO_3^(2-)`
`NA^+` is not hydrolyses
`CO_3^(2-)` is hydrated
`CO_3^(2-) + 2H_2O hArr H_2CO_3 + 2OH^(-)`
Here, `[OH^-]` INCREASES so solution is basic.


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