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Question

A solution is 0.010 M in each of Pb(NO3)2, Mn(NO3)2, and Zn(NO3)2. Solid NaOH is added until the pH of the solution is 8.50. Which of the following statements is true?

SaltKsp
Pb(OH)21.4 x10-20
Mn(OH)22.0 x10-13
Zn(OH)22.1 x10-16

A) Only Mn(OH)2will precipitate.
B) All three hydroxides will precipitate.
C) Only Pb(OH)2will precipitate.
D) No precipitate will form.
E) Only Zn(OH)2and Pb(OH)2will precipitate.

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