Consider the equilibrium mixture: [Co(H2O)6]2+ (aq) + 4Cl- (aq) <--> [CoCl4]2- (aq) + 6H2O (l)
What would happen to the color if you added NaCl? (more blue, more pink, no color change) What component of the NaCl would influence the equilibrium in this way?
Consider the equilibrium mixture: [Co(H2O)6]2+ (aq) + 4Cl- (aq) <--> [CoCl4]2- (aq) + 6H2O (l) What...
A student doing the experiment in this module extendedthe study of the [CoCl4]2- ion /[Co(H20)6]2+ ionequilibrium. Whatis the net ionic equation for this reaction?ColumnpreviewNet ionic reactiona. [Co(H2O)6]2+ + 4Cl- <--> [CoCl4]2- + 6 H2Ob. [CoCl4]2- <--> [Co(H2O)6]2+c. [CoCl4]2- + 4Cl- <--> [Co(H2O)6]2+ 6 H2Od. [CoCl4]2- + 6 H2O <--> [Co(H2O)6]2+ + 4Cl-e. No right answerf. CoCl2 + 2HCl <--> [CoCl4]2- + 2H+MatchingpairsNet ionic reaction- Select choice -abcdefA student doing the experiment in this module extended the study ofthe [CoCl4]2- ion...
Co(H2O)6]2+, [CoCl4]2- Equilibrium (common ion) 1.Effect of concentrated HCl. Place about 10 drops of 1.0 M CoCl2 in a 75 mm test tube. 2.Add drops of concentrated HCl (Caution: Avoid inhalation and skin contact). This solution is found in the hood. Place the test tube in a test tube rack. 3.Remove and hold the coin stopper while you use it. Place coin stopper on bottle when done) until a color change occurs. 4.Slowly add water to the system and stir....
Cu2+ Equilibrium #3 NH3(aq) + H2O(1) A NH (W) + OH Cam colorless pink Stress Predicted Shift (forward or reverse) Predicted Color Actual Shift (forward or reverse) Actual Color Did the prediction match the actual result? after addition of NH3 after addition of NH4+ Rev 11-27-17 ADA Equilibrium #4 NiCl(aq) + 6NH3(aq) Ni(NH3)2(aq) + 2Cl(aq) yellow-green blue Stress Predicted Shift (forward or reverse) Predicted Color Actual Shift (forward or reverse) Actual Color Did the prediction match the actual result? after...
C. Complex Ion Equilibria 5.Explain the color change that occurred when water was added in Step 2 of the procedure. 6.Explain the color change that occurred when the diluted solution was heated. i.How did increasing the temperature affect the value of Kc? ii.What is the sign of ΔH in Reaction 7? Co(H2O)6^2+ (aq) + 4Cl- (aq) <——> CoCl4^2+ (aq) + 6H2O
. Predict the direction of the equilibrium for the following reaction by stating left, right, or no change. a. H2O is added to 4NH3(g) + 70(8) - 2N2048) + 6H2O(1) b. NH3(aq) is added to Agt (aq) + CI'S AgCl(s) c. KI(aq) is added to Ag+ (aq) + 2 NHS [Ag(NH3)2)* (aq) d. Carbon is added to 3C(s) + 3H2(e) CH.(g) + CHCⓇ) e. Catalyst is added to 2NOCI () - 2NO() + Cl() 2. Write the nomenclature of the...
Write the equation for the Equilibrium constant, K, for the equilibrium between [CoCl4] 2– and [Co(H2O)6] 2+ .
NH4+(aq) + H2O (l) BLUE <--GREEN--> NH3(aq) + H3O+(aq) YELLOW NH4+ + H2O= Blue. NH3 + H3O = Yellow. Mix is green at equilibrium. Q: When adding sodium hydroxide solution, the color of the equilibrium mixture changed from green ---> yellow. a. In which direction did the equilibrium shift? (L) left or (R) right b. Explain answer to a. Which ion was added or removed from the equilibrium mixture?
Aqueous solutions of Co2+ salts are pale pink. They contain the complex ion [Co(H2O)6]2+. Addition of concentrated HCl results in a profound colour change to dark blue, due to formation of [CoCl4]2–. The main absorption bands of [Co(H2O)6]2+ and [CoCl4]2– occur at 19400 cm–1 (e ~ 10 M–1 cm–1) and 14700 cm–1 (e ~ 1000 M–1 cm–1), respectively. (i) Explain the difference in the transition energies between the two complexes. (ii) Using a qualitative molecular orbital diagram, explain why the...
1. Fe^3+(aq) + 4Cl^-(aq) ⇌ [FeCl4]^-(aq) 2. NaF(s) + H2O(l) → Na^+(aq) + F^-(aq) 3. Fe^+(aq) + 6F^-(aq) ⇌ [FeF6]^3-(aq) Describe on the how the concentrations of Fe3+, Cl-, and [FeCl4]- changed when NaF is added (Refer to equations provided above). How did [Fe3+] change upon addition of NaF? _________________________________ How did [Cl-] change upon addition of NaF? _________________________________ How did [FeCl4-] change upon the addition of NaF? _____________________________
2. Consider the following equilibrium represent by the reversible equation below: Cu2+(aq) + 4 NH4OH(aq) = [Cu(NH3)4]2+(aq) + 4 H2O(1) Blue Colorless Navy blue Predict the shift (explain why) and indicate the color of the solution when a. Drops of strong acid is added b. H2S gas is bubbled in the solution. Note: H2S reacts with transition metal cations. c. Water is added to the mixture at equilibrium.