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Silver ions are slowly added in a solution with
P \( \left[\mathrm{Br}^{-}\right]=\left[\mathrm{Cl}^{-}\right]=\left[\mathrm{CO}_{3}{ }^{2-}\right]=\left[\mathrm{PO}_{4}{ }^{3-}\right]=0.1 \mathrm{M} \). Which

W of the following compound will precipitate first?
(1) \( \operatorname{AgBr}\left(\mathrm{K}_{\mathrm{sp}}=5 \times 10^{-13}\right) \)
(2) \( \mathrm{AgCl}\left(\mathrm{K}_{\mathrm{sp}}=1.8 \times 10^{-10}\right) \)
(3) \( \mathrm{Ag}_{2} \mathrm{CO}_{3}\left(\mathrm{~K}_{\mathrm{sp}}=8.1 \times 10^{-12}\right) \)
(4) \( \mathrm{Ag}_{3} \mathrm{PO}_{4}\left(\mathrm{~K}_{\mathrm{sp}}=1 \times 10^{-22}\right) \)
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