A buffer solution contains 0.1 mole of sodium acetate in 1000 cm^(3) of 0.1 M acetic acid. To the above buffer solution, 0.1 M aceticacid. To the above buffer solution, 0.1 mole of sodium acetate is further added and dissolved. The pH of the resultingbuffer is equal to ...........

A buffer solution contains 0.1 mole of sodium acetate in 1000 cm^(3) o

1.	A buffer solution contains 0.1 mole of sodium acetate in 1000 cm^(3) of 0.1 M acetic acid. To the above buffer solution, 0.1 M aceticacid. To the above buffer solution, 0.1 mole of sodium acetate is further added and dissolved. The pH of the resultingbuffer is equal to ...........
Answer» `pK_(a) - log2` `pK_(a)` `pK_(a)+2` `pK_(a)+LOG 2` Solution :`pH = pK_(a) + log.(["Salt"])/(["Acid"])` [Salt]`=(0.1+0.1"mole")/(1000 ML) = (0.2"mole")/(1L) = 0.2M` [Acid]`=(0.1 "mole")/(1000mL) = (0.1"mole")/(1L)=0.1 M` `:. pH = pK_(a) + log 2`.