1.

A certain buffer solution contains equal concentration of X^- and HX. The K_afor HX is 10^(-8) The pH of the buffer is

Answer»

5
8
6
14

Solution :Foracidicbuffer
`pH =pK_a+log("[SALT]")/(["ACID"])`
`:.["salt"]=["Acid"]`
` thereforepH = pK_a=- log 10^(-8) =8`


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