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A solution containing potassium bromide is mixed with one containing lead acetate to form a solution...

A solution containing potassium bromide is mixed with one containing lead acetate to form a solution that is 0.013 M in KBr and 0.0035 M in Pb(C2H3O2)2.

Will a precipitate form in the mixed solution? If so, identify the precipitate.

Express your answer as a chemical formula. Enter noreaction if no precipitate is formed.

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Answer #1

Ksp of PbBr2 can be wriiten as below

7.9 X 10-5= [Pb2+][Br-]2

[Pb2+] = 0.0035M, [Br-] = 0.013M

If we Substitute those values in the equation

[Pb2+][Br-]2  will give

0.0035*0.013*0.013 = 5.915 X10-7


The resulting value is lesser than the Ksp, Hence no precipitate of PbBr2 will be produced.

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