1.

A buffer solution is prepared by mixing equal concentration of acid (ionisation constant K_(a)) and a salt. The pH of buffer is

Answer»

`pK_(a) + 7`
`14 - pK_(a)`
`pK_(a)`
`pK_(a) + 1`

Solution :PH of buffer is
`pH = pK_(a) + LOG.(["SALT"])/(["acid"])`
Since, [salt] = [acid], `pH = pK_(a)`.


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