[Cr(NH3)2(H2O)2Cl2]+  Coordination Number (explain reasoning  create a model of the cation, and draw its projection formula in your laboratory notebook.

1. What is the balanced net ionic equation for the equilibrium involving complex ions, CoCL42- and [Co(H2O)6]2+. 2. When heating the mixture the color was blue and when cooled it was pink. Based on this, is the forward reaction endothermic or exothermic and why? What is the balanced net ionic equation when heat is included?  3. How could an alcohol solution of CoCL2 beused to predict rain?

What is the transition metal-containing product for the following reaction, where [Rh(CO)Br3]2- is a square-planar complex? [Rh(CO)Br3]2-  +  CO(g)  -->  ? Group of answer choices [RhBr4]3- an equal mixture of cis- and trans-[Rh(CO)2Br2]- trans-[Rh(CO)2Br2]- cis-[Rh(CO)2Br2]-

[CoF6]3- absorbs 700 nm (red) radiation whereas [Co(H2O)6]3+ absorbs 600 nm (orange) radiation.  What are the colors (appearance) of the above complexes?

COBALT COMPLEX:       [CoCl4]2-(aq) + 6H2O(l)  « [Co(H2O)6]2+(aq) + 4Cl-(aq) + Heat                                                            Blue                                       Pink STEPS #- Solutions Observations 1-DISSOLVE COBALT COMPLEX PINK SOLUTION 2-SOLUTION PLUS HCl BLUE SOLUTION 3-ADD WATER PINK SOLUTION 4-HEAT SOLUTION BLUE SOLUTION According to the equilibrium equation, which ion(s) do you have when the solution dissolved? Explain how you know the identity of the ion(s) present.     2. Explain what happened when the HCl was added to the solution.       3. Explain what happened when the H2O was added to the solution.      4. Explain what happened when the solution was heated. Was the reaction exothermic or endothermic?

[Co(H2O)6]2+ (aq) + 4 Cl-(aq )⇆ [CoCl4]2-(aq) + 6 H2O Explain why the addition of water changes the equilibrium position even though the concentration of water is essentially constant and normally not included in the equilibrium constant expression. What are two functions that water performs in this reaction?