2. Thorium fluoride (ThF) is not very soluble in water (Kop=5 1029). What is the concen-...
2. Thorium fluoride (ThF) is not very soluble in water (K = 5 x 1029). What is the concen- tration (molarity) of fluoride in a solution saturated with ThF,? ThF.(s) – Th'+ (aq) + F (aq)
Thorium fluoride (ThF4) is not very soluble in water (Ksp = 5 × 1029). What is the concen- tration (molarity) of fluoride in a solution saturated with ThF4? R ThF4(s) Th4+(aq) + F– (aq)
Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 567 g NaOH(s) per liter of solution. Calculate the molarity of this saturated NaOH(aq) solution. concentration: If 8.67 g of CuNO, is dissolved in water to make a 0.250 M solution, what is the volume of the solution in milliliters? volume: mL
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.]
2. While caffeine is very soluble in water, aspirin is only minimally soluble. a. Clearly explain why you think caffeine is soluble in water. b. In order to dissolve the aspirin, I had to use a sodium hydroxide solution (this is why you had to add HCl to the separatory funnel.) Clearly explain how the use of a sodium hydroxide solution allowed the aspirin to dissolve. Structures/reaction(s) will likely help your answer.
2. The equilibrium constant for the following reaction is called the "solubility product" of calcium fluoride: CaF2(s) - Cal(aq) + 2F-(ay) K = Kp = 3.2 x 10-11 (a) Write an expression for the equilibrium constant of this reaction in terms of concentrations. Why do you suppose we call this a solubility product instead of a solubility quotient or ratio? (b) Calculate the equilibrium concentrations of Ca2+ and F if excess solid CaF is placed in water. (c) in which...
5.0 g of barium fluoride is added to 1.0 L of water. After a sufficient amount of time, the saturated solution is filtered and the solid is dried and weighed and found to have a mass of 3.6g. What is the solubility product constant, Ksp Bato Bar + 2 Flag) (BaFz)? Ksp = [B2[F]?
For the reaction MgF2(s) <=> Mg2+(aq) + 2 F-(aq), at a given temperature, K = 7.4 x 10-11. What MASS (you’ll need to calculate molarity!) of MgF2 could be added to 2L of water, such that ALL the MgF2 dissolves? How soluble is MgF2 in water (qualitative answer…ie, VERY, NOT VERY, etc).
Exam review questions 2) In which aqueous system is PbF2 least soluble? 2) A) 1.0 M HNO3 B) H20 C) 0.5 M HF D) 0.2 MHF E) 0.8 M KF 3) A buffer solution contains 0.100 M fluoride ions and 0.126 M hydrogen fluoride. What is the 3) concentration (M) of hydrogen fluoride after addition of 7.00 mL. of 0.0100 M HCI to 25.0 mL of this C0.123 4) In which of the following aqueous solutions would you expect AgCl...
Please help asap =) 2. Lead(II)chloride is insoluble in water Kap PbCn 1.7x10-) and silver chloride is very insoluble in water (Ksp Agci 1.8x10-10). The reactions when they go into solution are: AgCl(s) ←→ Ag+(aq) + Cl-(aq) PbCl2(s)艹Pb+2(aq) + 2 Cl-(aq) a. What are the expressions for the equilibrium constants, Kop for the above reactions? b. Explain why it is possible to dissolve more lead(I)chloride in solutions in which the concentration of the silver ion is present. c. Explain what...