Chemistry Chemistry Practice Problems Solutions Library

Formation Constant Solutions Library

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30 solutions

Formation Constant

Q. The formation constant of [M(CN)2]- is 5.30 x 1018, where M is a generic metal.A 0.160-mole quantity of M(NO3) is added to a liter of 0.710 M NaCN ...

Solved • Mar 17, 2020

Formation Constant

Q. Copper(l) ions in aqueous solution react with NH3(ag) according toCu+(aq) + 2NH3(aq) → Cu(NH3)2+(aq)           Kf = 6.3 x 1010Calculate the solubil...

Solved • Mar 17, 2020

Formation Constant

Q. Calculate the molar solubility of AgCl (K sp = 1.8 x 10 -10 at 25 degrees C) in 3.0 M NH3Ag+(aq) + 2NH3(aq) ⇌ Ag(NH3)2+(aq)Kf = 1.6 x 107

Solved • Aug 25, 2019

Formation Constant

Q. The complex ion Cu(NH3)42+ is formed in a solution made of 0.0200M Cu(NO 3)2 and 0.500M NH3. What are the concentrations of Cu 2+, NH3, and Cu(NH3)...

Solved • Aug 5, 2019

Formation Constant

Q. Calculate the solubility of silver chloride in a solution that is 0.160 M in NH3 (initial concentration).

Solved • Jan 3, 2019

Formation Constant

Q. Use the appropriate values of Ksp and Kf to find the equilibrium constant for the following reaction:FeS(s) + 6 CN–(aq) ⇌ Fe(CN)64–(aq) + S2– (aq)

Solved • Jan 3, 2019

Formation Constant

Q. When 0.84 g of ZnCl2 is dissolved in 245 mL of 0.150 M NaCN, what are [Zn2+], [Zn(CN)4 2−], and [CN−] [Kf of Zn(CN)4 2− = 4.2×1019]?

Solved • Nov 21, 2018

Formation Constant

Q. What is [Ag+] when 25.0 mL each of 0.044 M AgNO3 and 0.57 M Na2S2O3 are mixed? [Kf of Ag (S2O3)2 3− = 4.7×1013]?

Solved • Nov 21, 2018

Formation Constant

Q. The Hg2+ ion forms complex ions with I - as follows:Hg2+(aq) + I -(aq) ⇌ HgI+(aq)            K 1 = 1.0 X 108HgI+(aq) + I -(aq) ⇌ HgI2(aq)          ...

Solved • Nov 12, 2018

Formation Constant

Q. 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 equilibri...

Solved • Nov 12, 2018

Formation Constant

Q. Calculate the concentration of Pb2+ in the following.c. Ethylenediaminetetraacetate (EDTA4-) is used as a complexing agent in chemical analysis and...

Solved • Nov 9, 2018

Formation Constant

Q. Kf for the complex ion Ag(NH3)2+ is 1.7 X 107. Ksp for AgCl is 1.6 X 10 -10. Calculate the molar solubility of AgCl in 1.0 M NH3.

Solved • Nov 9, 2018

Formation Constant

Q. Calculate the molar solubility of AgI in 3.0 M NH 3. The overall formation constant for Ag(NH3)2+ is 1.7 X 107.

Solved • Nov 9, 2018

Formation Constant

Q. A solution is formed by mixing 50.0 mL of 10.0 M NaX with 50.0 mL of 2.0 X 10  -3 M CuNO3. Assume that Cu+ form complex ions with X - as follow:Cu+...

Solved • Nov 9, 2018

Formation Constant

Q. A solution is formed by mixing 50.0 mL of 10.0 M NaX with 50.0 mL of 2.0 X 10  -3 M CuNO3. Assume that Cu+ form complex ions with X - as follow:Cu+...

Solved • Nov 9, 2018

Formation Constant

Q. The overall formation constant for HgI42- is 1.0 X 1030. That is,What is the concentration of Hg 2+ in 500.0 mL of a solution that was originally 0...

Solved • Nov 9, 2018

Formation Constant

Q. In the presence of CN -, Fe3+ forms the complex ion Fe(CN)63-. The equilibrium concentrations of Fe3+ and Fe(CN)63- are 8.5 X 10 -40 M and 1.5 X 10...

Solved • Nov 9, 2018

Formation Constant

Q. Calculate the equilibrium concentration of Zn2+ in a 0.30-M solution of Zn(CN)42−.

Solved • Nov 8, 2018

Formation Constant

Q. Calculate the equilibrium concentration of Ni2+ in a 1.0-M solution [Ni(NH3)6](NO3)2.

Solved • Nov 8, 2018

Formation Constant

Q. What are the concentrations of Ag+, CN–, and Ag(CN)2− in a saturated solution of AgCN?

Solved • Nov 8, 2018

Formation Constant

Q. Using the dissociation constant, Kd = 2.2 × 10–34, calculate the equilibrium concentrations of Co3+ and NH3 in a 0.500-M solution of Co(NH3)63+.

Solved • Nov 8, 2018

Formation Constant

Q. Using the dissociation constant, Kd = 3.4 × 10–15, calculate the equilibrium concentrations of Zn2+ and OH– in a 0.0465-M solution of Zn(OH)42−.

Solved • Nov 8, 2018

Formation Constant

Q. Calculate the cadmium ion concentration, [Cd2+], in a solution prepared by mixing 0.100 L of 0.0100 M Cd(NO3)2 with 1.150 L of 0.100 NH3(aq).

Solved • Nov 7, 2018

Formation Constant

Q. Fe3+(aq) + SCN-(aq) ⇌ FeSCN2+(aq)From known initial concentrations of Fe3+(aq) and SCN-(aq), and a spectrophotometric determination of the concentr...

Solved • Feb 21, 2018

Formation Constant

Q. Copper (I) ions in aqueous solution react with NH 3 (aq) according to   Cu+ (aq) + 2NH3 (aq) → Cu(NH3)2 + (aq)      Kf = 6.3 x 1010  Calculate th...

Solved • Jan 4, 2018

Formation Constant

Q. Potassium thiocyanate, KSCN, is often used to detect the presence of Fe3+ ions in solution by the formation of the red Fe(H2O)5SCN2+ (or, more simp...

Solved • Dec 15, 2017

Formation Constant

Q. Copper(II) hydroxide, Cu(OH)2, has Ksp = 2.2 x 10 -20. For the reaction below, Keq = 4.0 x 10-7. What is Kf for Cu(NH3)42+?Cu(OH)2(s) + 4 NH3(aq) ⇋...

Solved • Dec 15, 2017

Formation Constant

Q. Copper (I) ions in aqueous solution react with 0.56 M NH 3 (aq) according toCu+ (aq) + 2 NH3 (aq) → Cu(NH3)2+ (aq)      Calculate the solubility in...

Solved • Sep 22, 2017

Formation Constant

Q. Silver chloride is relatively insoluble in water (Ksp for AgCl = 1.8 x 10 -10). Given the equation below.Which would you add to dissolve as much Ag...

Solved • Jan 30, 2017

Formation Constant

Q. Which reaction below corresponds to the K f for Co(NH3)42+:             A.  Co2+(aq) + 4 NH3(aq) → Co(NH3)42+(aq)             B.  Co(s) + 4 NH3+(...

Solved • Nov 10, 2016