- Question 4 Answer All Parts A Predict Whether The Cr Nh3 Cl2 Complex Will Be High Or Low Spin Configuration Knowing 1 (71.34 KiB) Viewed 69 times
- Question 4 Answer All Parts A Predict Whether The Cr Nh3 Cl2 Complex Will Be High Or Low Spin Configuration Knowing 2 (37.46 KiB) Viewed 69 times
Question 4 Answer all parts. (a) Predict whether the Cr(NH3).]Cl2 complex will be high or low spin configuration knowing that the observed magnetic moment is Mobs= 3.3 B.M. Clearly explain your answer. [5 marks) (b) How will a Ffree-ion term split in a high-spin octahedral or tetrahedral field? Clearly explain your answer. (5 marks) (c) The action of air and water on aqueous (Co(H20).]Cl; unusually results in a reduction of the cobalt complex to produce ozone and hydrochloric acid. (ii) Write the redox half-equations for this reaction and use them to write a full, balanced equation. [6 marks) What is the driving force for this reaction? [4 marks) End of Paper - An Appendix of 1 page follows Page 5 of 5 CHE203B-2022 Appendix 1 Complex A (cm) 2. (cm) Measured perr (118) at 298 K 1 12750 155 1.78 (pyH)3[TiClo] (Et4N)2[NiCl4] 2 3500 -315 3.90 3 Ba[ MnF6] 22000 199 3.80 14000 0 5.92 4 [Fe(OH2)6]2(SO4)3 py = pyridine, CsH:N.
Question 4 Answer all parts. (a) Predict whether the Cr(NH3).]Cl2 complex will be high or low spin configuration knowing that the observed magnetic moment is Hobs= 3.3 B.M. Clearly explain your answer. [5 marks) (b) How will a F free-ion term split in a high-spin octahedral or tetrahedral field? Clearly explain your answer. (5 marks) (c) The action of air and water on aqueous [Co(H20).]Clz unusually results in a reduction of the cobalt complex to produce ozone and hydrochloric acid. (i) Write the redox half-equations for this reaction and use them to write a full, balanced equation. [6 marks) (ii) What is the driving force for this reaction? [4 marks) End of Paper - An Appendix of 1 page follows