Hence the acid has no effect on the solubility of Hg 2 I 2 MgF 2 Mg 2 2F F H3O

# Hence the acid has no effect on the solubility of hg

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Hence, the acid has no effect on the solubility of Hg2I2.MgF2Mg2++ 2F-F-+ H3O+HF + H2OSince the concentration of F-is decreasing, according to LeChatelier the equilibrium equation will shift to the right; i.e., the solubility of MgF2will increase. 43.CHEM 162-2000 FINAL EXAMEQUILIBRIASOLUBILITY PRODUCTWhat is the molar solubility of CaF2in a 0.50 M aqueous solution of KF at 25oC? Kspfor CaF2= 4.0 x 10–11at 25oC.E 8.CHEM 162-2000 HOURLY EXAM IIIEQUILIBRIASOLUBILITY PRODUCTCalculate the massof MgF2(s) needed to prepare 500 mLof a saturated aqueous solution at 25oC. Kspfor MgF2(s) = 3.7 x 10-8at 25oCmolar mass of MgF2= 64.3 g/mol - Chapter 15B practice problems 27
14.CHEM 162-2000 HOURLY EXAM IIIEQUILIBRIASOLUBILITY PRODUCTThree chemistry professors mixed aqueous solutions of Ba(NO3)2and (NH4)2CO3as specified below. Which of the professors was/were successful in producing a precipitate of barium carbonate?Ksp= 8 x 10-9for BaCO3.Ba(NO3)2(NH4)2CO3Prof. Cotter: 100 mL of 1 x 10-2M100 mL of 1 x 10-2Prof. Erenrich 10 mL of 1 x 10-3M10 mL of 1 x 10-3Prof. Kimmel1 mL of 1 x 10-3M1 mL of 1 x 10-3M M M Chapter 15B practice problems 28
Chapter 15B practice problems 29
23. CHEM 162-2000 HOURLY EXAM III EQUILIBRIA SOLUBILITY PRODUCTWhat is the solubility of Ag2SO4in 2.0 M Na2SO4(aq) at 25oC? Kspfor Ag2SO4= 1.7 x 10–5at 25oC A.2.6 x 10-2M B.2.1 x10–6M C.4.1 x 10–3M D.6.4 x 10-3M E.1.5 x 10–3M. 25.CHEM 162-2000 HOURLY EXAM IIIEQUILIBRIASOLUBILITY PRODUCTWhich of the following sparingly soluble salts would be more soluble in an acidic solution than in pure water?I.PbI2II.PbF2III.CaCO3IV.Ag3PO4 PbI 2 Pb 2+ + 2I - I - + H 3 O + No reaction, because I - is the conjugate base of a strong acid, and therefore doesn’t react with H 3 O + . Hence, the acid has no effect on the solubility of PbI 2 . PbF 2 Pb 2+ + 2F - Chapter 15B practice problems 30

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• Spring '08
• siegal
• Solubility, Solubility equilibrium, equilibria solubility product