Interpretation:
The soluble solid in NH3 should be determined.
Concept introduction:
A complex ion is a polyatomic cation or anion composed of a central metal ion to which other groups (molecules or ions) called ligands are bonded. Coordination compounds are substances containing complex ions.
To describe the ionization of a weak acid, we use the ionization constant for a solubility equilibrium, we use the solubility product constant Ksp. The equilibrium constant that is used to deal with complex-ion equilibrium is called the formation constant. The formation constant, Kf, of a complex ion is the equilibrium constant describing the formation of a complex ion from a central ion and its attached groups.
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General Chemistry: Principles and Modern Applications (11th Edition)
- (a) True or false: “solubility” and “solubility-product constant”are the same number for a given compound. (b) Writethe expression for the solubility-product constant for eachof the following ionic compounds: MnCO3, Hg(OH)2, andCu3(PO4)2.arrow_forwardCalculate the solubility of PbF2 in water at 25°C.arrow_forwardThe maximum allowable concentration of Pb2+ ions in drinking water is 0.05 ppm (i.e., 0.05 g of Pb2+ in 1 million grams of water). (a) What is the Pb2+ concentration of an underground water supply at equilibrium with the mineral anglesite (PbSO4) (Ksp = 1.6 ×10−8) ? (b) Does this concentration exceed the allowable concentration guideline?arrow_forward
- Calculate the concentration of Cu²+(aq) in a solution that contains 0.020 mol of CuCl, and 0.100 mol of NaCN in 1.0 L. Cu²*(aq) + 4 CN¯(aq) 2Cu(CN);¯(aq) K = 2.0 × 1030 (Hint: Do not overlook the reaction of CN¯ with water to give HCN.)arrow_forwardAn aqueous solution at 25°C is 0.10 M in Ba2+and 0.50 M in Ca2++ ions. We wish to separate the two by taking advantage of the different solubilities of their fluorides, BaF2 and CaF2.(a) What is the highest possible fluoride ion concentration that allows only one solid fluoride salt to be present at equilibrium? Which ion is present in the solid—Ba2+ or Ca2+?(b) What fraction of the less soluble ion still remains in solution under the conditions of part (a)?arrow_forwardWrite chemical equations to show what happens when each of the following substances is mixedwith water:(i) Hydride ion(ii) Glucose, C6H12O6(s)(iii) Copper(II) bromide(iv) Formic acidarrow_forward
- Choose the acid below that would make the most effective buffer for a solution to maintain a pH of 5.00 (aq., 25 oC), given a 0.500 M concentration of it and its conjugate salt. a) propionic acid, Ka = 1.34 x 10–5 b) HN3, Ka = 1.90 x 10–5 c) butanoic acid, Ka = 1.52 x 10–5 d) NH4Cl, Ka = 5.56 x 10–10 e) benzoic acid, Ka = 6.30 x 10–5arrow_forwardWrite the expression for the solubility-product constant for eachof the following ionic compounds: MnCO3, Hg(OH)2, and Cu3(PO4)2.arrow_forwardThe reaction Cu(s) + HNO3(ag) Cu(NOsh(ag) + 2 NO:) +2 H;O() is used to dissolve the copper metal Ifa 1.000 g sample of copper is used, and instructions say to use four times as much acid as the required amount, how many mL (to the nearest mL) of 15.0 M nitric acid would be used in the procedure for this sample? Select one: O a 10mL Ob 17ml O c.4mL O d 25ml O e 5mLarrow_forward
- Consider the Gibbs energies at 25 °C. Substance AG; (kJ · mol-!) Ag*(aq) 77.1 Cl^(aq) -131.2 AgCl(s) -109.8 Br¯(aq) -104.0 AgBr(s) -96.9arrow_forwardDetermine whether solutions of the following salts are acidic, basic, or neutral at 25°C: (a) Cu(CH3COO)2: (b) NH4F: (c) KHC6H606. (a) acidic; (b) acidic; (c) acidic (a) acidic; (b) acidic; (c) basic (a) acidic; (b) basic; (c) basic (a) basic; (b) basic; (c) basicarrow_forwardCalculate the equilibrium concentration of Ag*(aq) in a solution that is initially 0.140 M AgNO3 and 0.980 MNH3, and in which the following reaction takes place: Ag*(aq) + 2NH3(aq)= Ag(NH3);(ag) (Kf = 1.70×107)arrow_forward
- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning