Use The Following Half Cells With Their Reduction Potentials To Answer The Electrochemistry Questions Below Half Reacti 1 (39.9 KiB) Viewed 67 times
Use the following half-cells with their reduction potentials to answer the electrochemistry questions below: Half-Reaction Al³+ (aq) + 3 e Al(s) HO₂ (aq) + H₂O(l) + 2 e 3 OH(aq) Ag+ (aq) + e Ag(s) Co2+(aq) +2e^ = Co(s) Zn²+ (aq) + 2 e → Zn(s) Eºred (V) +1.66 +0.88 +0.80 +0.28 -0.76 Question 2 Consider aluminum phosphate (AIPO4; Ksp (Ca3(PO4)2; Ksp = 2.0×10-2⁹). = 9.8x10-22) and calcium phosphate a) (2) Determine which of these salts is more soluble in water. b) (1) Considering a solution containing 0.0400 M AI(NO3)3 and 0.0800 M CaCl2, calculate [PO43-] when the first cation begins to precipitate. c) (1) Calculate the percentage of the first ion to precipitate, from (b), that remains in solution, when the second ion begins to precipitate. d) (1) Is using precipitation an effective method to separate these to cations, in (b), from each other? Explain!
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