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Two buffer solutions A and B each made w...

Two buffer solutions `A` and `B` each made with benzoic acid and sodium benzoate differ in their `pH` by two units. A has salt`:` acid`a:b. B` has salt`:` acid `=b:a.` If `agtb`, then the value of `a:b` is
`a. 3.17" "b.10.0" "c.3.0" "d. 6.0`

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