Solubility Homework Set

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Unformatted text preview: the following reaction: Fe(OH)3(s) + 3 H+(aq) ↔ Fe3+(aq) + 3H2O(l) a.) NaOH b.) NH3 c.) HNO3 d.) HCl e.) aqua regia 6 Dr. Fus CHEM 123 82. Why is H2O2 an effective oxidizing agent? 83. Consider the following reaction: Mn+(aq) + x NH3(aq) ↔ M(NH3)xn+ (aq) where Mn+ = Al3+, Cr3+, Fe3+, Ni2+, Co2+, Zn2+. (a) Upon addition of NH3 which complex ions will form? (b) NH3 was added and was also buffered with NH4Cl. Which complex ions will form? 84. You will be responsible for all the chemical separations that were mentioned in class. Be sure to look over your notes and know everything that was discussed. Solutions 1. Ksp = [La3+]2[CO32‐]3 2. Ksp = [Zn2+]3[PO43‐]2 3. Ksp = [La3+]2[CO32‐]3 4. Ksp = [Fe2+][OH‐]3 5. 1.3 x 10‐3 M 6. 5.3 x 10‐7 M 7. 1.6 x 10‐6 8. 1.2 x 10‐5 9. 1.2 x 10‐7 10. 1.1 x 10‐73 11. 1.6 x 10‐5 12. 2.8 x 10‐9 13. 1.6 x 10‐2 g/L 14. 2.6 x 10‐7 g/L 15. 3.0 x 10‐3 16. AgBr 17. Ag2CO3 18. AgBr 19. AgCl(s) and PbCl2(s) 20. In order to ensure the PbCl2(s) will form. 2...
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