Question

Dissolution of the Precipitate-Basicity of the Anion Phosphate ion, the conjugate base of HPO is one example of an anion of a weak acid. In solution, we can expect phosphate to do two things: Accept an Hion, as well as form precipitates with metal cations such as Fe. These two reactions are shown below: PO. (ag) + H (ap) HPO. (ag) K, for (HPO ) = 4.8 x 10" FePO.(1) Fe (my) + PO. (a) K = 1.3 x 10" 4. Add these two equations together, and give the result below. 5. Therefore, if you had solid iron(III) phosphate sitting at the bottom of your test tube, and you added concentrated acid to it, what would you obser 6. If you had solid AgCl sitting at the bottom of your test tube, and you added concentrated acid to it what would you observe? Justify your answer. (Hint: How is C different from PO43-?)

Answer 1

4.8 x10 Answer 4.) - Cor) - HPolan 13x10-22 te pog(s) ² feet (ar) + Pol (2) Fero(s) + int (an) te 3+ (aq) + upor (62) k = 4.87103 1.3 x 22 = 6.24x10-35 ard to Arswer 5) the phosphate arion will react with деш и Ро . Felon (s) + ut (ar) Fet (ar) + Hot (ae) Answer 6) The ci con well react with 14t to gue tel Ag alls) + nt (on HQ (aq) + Agt (an)