
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...
Copper hydroxide dissolves in water according to the following equation. It is only very slightly soluble. Cu(OH)2(s) Cu2+(aq) + 2OH- (aq) a. Explain how the solubility can be increased by adding HCl to the solution. b. Explain how the concentration of copper (II) ion or of hydroxide ion can be reduced in the solution so that more of the solid copper hydroxide can be dissolved
a. For barium fluoride (BaF2) has a Ksp = 2.45 x 10-5 M3. What is the maximum solubility of BaF2? b. What is the concentration of [F-] in a saturated BaF2 solution? [F-] = ___ M
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).