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A saturated 0.01 M H(2) S solution is bu...

A saturated 0.01 M `H_(2)` S solution is buffered at pH =3 with exactly sufficient Pb`(NO_(3))_(2)` to not precipitate Pbc. `K_(a) ` of `H_(2) S = 10^(-23),K_(sp)` of Pbs = `10^(-28)` . The concentration of `Pb^(+2)` in the solution is `10^(-x)` . What is x ?

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