Consider the following equilibrium using LeChatelier’s Principle – note the colors:                                     Co(H2O)62+ (aq)  +   4Cl–  (aq)    ⟷       CoCl42–  (aq)  + 6H2O (l)                                         Pink                                                                           Blue What color will the solution turn if the following stresses are applied and why? HCl (aq) is added. CoCl42– is removed. Pb2+ is added to the system. Lead reacts with chloride ions to form solid PbCl2. The solution turns pink when the solution is heated and turns back blue when placed in an ice bath. Based on this information, on which side of the reaction arrow does the word "heat" belong?

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter15: Principles Of Chemical Reactivity: Equilibria
Section15.2: The Equilibrium Constant And Reaction Quotient
Problem 15.1CYU: Write the equilibrium constant expression for each of the following reactions in terms of...
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Consider the following equilibrium using LeChatelier’s Principle – note the colors:

                                    Co(H2O)62+ (aq)  +   4Cl  (aq)    ⟷       CoCl42–  (aq)  + 6H2O (l)

                                        Pink                                                                           Blue

What color will the solution turn if the following stresses are applied and why?

  1. HCl (aq) is added.
  2. CoCl42– is removed.
  3. Pb2+ is added to the system. Lead reacts with chloride ions to form solid PbCl2.
  4. The solution turns pink when the solution is heated and turns back blue when placed in an ice bath. Based on this information, on which side of the reaction arrow does the word "heat" belong?
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