The Ksp for PbF2 is 4.0 108. If a 0.017 M NaF solution is ...

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Question 1

The K_sp for Mn(OH)₂ is 2.0 × 10^–13. At what pH will Mn(OH)₂ begin to precipitate from a solution in which the initial concentration of Mn²⁺ is 0.10 M?

◦ 6.47
◦ 13.3
◦ 5.85
◦ 7.03
◦ 8.15

Question 2

The K_sp for PbF₂ is 4.0 × 10^–8. If a 0.017 M NaF solution is saturated with PbF₂, what is the [Pb²⁺] in solution?

◦ 2.4 × 10^–6M
◦ 1.2 × 10^–11M
◦ 8.1 × 10^–3M
◦ 1.4 × 10^–4M
◦ 6.8 × 10^–10M

[fatboyy09]

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[CORALGRILL2014]

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