The formation constant for [Cu(NH3)4]2+ is 5.00 × 1012. What is the equilibrium expression for this value?
Group of answer choices
Kf = 1/[[Cu(NH3)4]2+]
Kf = [Cu2+][NH3]4/[[Cu(NH3)4]2+]
Kf = [Cu2+][NH3]/[[Cu(NH3)4]2+]
Kf = [[Cu(NH3)4]2+]/[Cu2+][NH3]4
Kf = [[Cu(NH3)4]2+]/[Cu2+][NH3]
Kf = [[Cu(NH3)4]2+]
formation constant for [Cu(NH3)4]2+ = 5.00 × 1012
balanced equation :
Cu2+ (aq) + 4 NH3 (aq) ------------> [Cu(NH3)4]2+
equilibrium expression :
Kf = [ [Cu(NH3)4]2+] / [Cu2+] [NH3]4
Answer :
Kf = [[Cu(NH3)4]2+]/[Cu2+][NH3]4
The formation constant for [Cu(NH3)4]2+ is 5.00 × 1012. What is the equilibrium expression for this...
The complex ion Cu(NH3)42+ is formed in a solution made of 0.0100 M Cu(NO3)2 and 0.300 M NH3. What are the concentrations of Cu2 , NH3, and Cu(NH3)42+ at equilibrium? The formation constant*, Kf, of Cu(NH3)42+ is 1.70 × 1013
Part B: Calculate the formation constant for the formation of [Cu(NH3)4(H2O)2]2+ from [Cu(H2O)6]2+, given that ΔG∘ is −74.2kJ⋅mol−1 at 298 K. Express your answer numerically to three significant figures. Part C: Consider the formation of [Ni(en)3]2+ from [Ni(H2O)6]2+. The stepwise ΔG∘ values at 298 Kare ΔG∘1 for first step=−42.9 kJ⋅mol−1 ΔG∘2 for second step=−35.8 kJ⋅mol−1 ΔG∘3 for third step=−24.3 kJ⋅mol−1Calculate the overall formation constant (Kf) for the complex [Ni(en)3]2+. Express your answer numerically to three significant figures.
The complex ion Cu(NH3)42+ is formed in a solution made of 0.0300 M Cu(NO3)2 and 0.400 M NH3. What are the concentrations of Cu2+, NH3, and Cu(NH3)42+ at equilibrium? The formation constant*, Kf, of Cu(NH3)42+ is 1.70 x 1013 Suppose you have a solution that contains 0.0440 M Ca2+ and 0.0980 M Ag+. If solid Na3PO4 is added to this mixture, which of the following phosphate species would precipitate out of solution first? When the second cation just starts to precipitate, what percentage...
Copper(II) carbonate is very poorly soluble in water, but better soluble in NH3(aq) due to the formation of the Cu(NH3)4 2+ complex: CuCO3(s) + 4NH3(aq) ⇄ Cu(NH3)4 2+ (aq) + CO3 2- (aq) CuCO3 (Ksp = 2.3·10-10 ) and the formation constant for Cu(NH3)4 2+ (Kf = 5.0·1012) What was the initial concentration of NH3(aq), if 0.010 mol of CuCO3(s) dissolved at equilibrium in 1.00 L of this solution? [Consider the change in the volume of solution negligible.]
For the following half-reaction, E° = 1.103 V. Calculate the formation constant (Kf) for Cu(CN)2–. Cu2+(aq) + 2CN–(aq) + e– → Cu(CN)2–(aq)
4. Write an expression for the equilibrium constant for the formation of two moles of ammonia gas (NH3) from nitrogen and hydrogen in their standard states. N2(g) + 3H2() 52 NH,(8)
a. Using the Ksp value for Cu(OH)2 (1.6 x 10-19) and the overall formation constant for Cu(NH3)42+ (1.0 x 1013), calculate the value for the equilibrium constant for the following reaction: Cu(OH)2 (s) + 4NH3 (aq) ⇌ Cu(NH3)42+(aq) + 2OH -(aq) b. Use the value of the equilibrium constant you calculated in part a to calculate the solubility (in mol/L) of Cu(OH)2 in 5.0 M NH3. In 5.0 M NH3 the concentration of OH - is 0.0095 M.
Which of the following is the Ksp expression for the ionization of Cu(OH)2 in aqueous solution? Group of answer choices a. [Cu2+][OH-]2 b. [Cu+]2[OH2-] c. [Cu2+][2OH-] d. [Cu2+][OH2-]/[Cu(OH)2]
Part A 2+ which has a In an excess of NH3 (aq), Cu24 ion forms a deep blue complex ion, Cu(NH3)4 formation constant Kf = 5.6 x 101" Calculate the concentration of Cu2+ in a solution prepared by adding 4.6 x 10-3mol of CuSO4 to 0.470 L of 0.39 M NH3 Express your answer using two significant figures. ν ΑΣΦ ? [Cu2]= M Request Answer Submit
The equilibrium constant for the formation of Cu(CN)42- is 2.0 x 1030. Calculate the value of pCu2+, or -log[Cu2+], if we were to dissolve 2.79 g of CuCl2 in 1.000 L of a solution 0.873 M in NaCN. The addition of CuCl2 does not alter the volume (the final volume is still 1.000 L).