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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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- Write the equilibrium constant expression for the formation of thiocyanoiron (III) from iron (III) and thiocyanate.
Fe3+(aq) + SCN1–(aq) FeSCN2+(aq)
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- 6. a) Discuss the relationship between the octahedral splitting energy, (Aoct), for complex ions and the ligand strength of the ligands in the complex ion. b) Considering only the complexes, Ni(en)3²+ (aq), Ni(NH3)²+(aq), and Ni(H₂O)62+ (aq), determine the relative ligand strengths of ammonia, ethylenediamine and water. Place the ligands in increasing order of ligand strength. (weakest ligand to the strongest ligand.) c) Discuss how you arrived at your conclusion in part b. Include in your discussion your data and/or your calculated values for these complex ions to support your conclusion.arrow_forwardTrue or False: (answer directly) 1. If a solution does not form any precipitate when BaCl2 and AgNO3 are separately added, then it is merely distilled water. 2. [Ni(en)3]2+ has higher crystal field splitting energy than [Ni(H2O)6]2+. 3. When solid Ca(OH)2 was dissolved in 0.10 M CaCl2, the solubility product constant was lowered. 4. [Co(NO2)6]3- is an orange octahedral complex with an IUPAC name of hexanitrocobalt(III). 5. In the solubility equilibrium experiment, a saturated solution of Ca(OH)2 maintained in ice bath holds more dissolved calcium than at room temperature. 6. In the hydrogen peroxide system, the detergent is used to detect the formation of H2O molecules. 7. In the selective precipitation experiment, the silver precipitate with lower Ksp dissolves more easily upon the addition of NH3. 8. Frost-Ebsworth diagrams can predict both disproportionation and comproportionation reactions. 9. [Fe(H2O)5SCN]2+, [Ni(en)3]2+ and [Zn(OH)4]2- are octahedral complexes. 10. Reversible…arrow_forwardWhat mass (in grams) of Na2S2O3 is needed to dissolve 0.44 g of AgBr in a solution volume of 1.0 L, given that Ksp for AgBr is 3.3×10−13 and Kf for [Ag(S2O3)2]3− is 4.7×1013?arrow_forward
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