The solubility product constant(Ksp) of lead(II) iodide is 1.4 x 10 -8 at 25°C. CalculateAG°for the dissociation of lead(II) iodide in water. Pbl2(s) = Pb²*(aq) + 21¯(aq)

Metal sulfides are prepared by bubbling hydrogen sulfide gas, H, S, through an aqueous solution containing the metal ion, and then adjusting the pH. When the solution is saturated with H, S, which occurs when [H,S] = 0.100 M, the equilibrium shown is established. H, S(aq) + 2 H, O(1) = s²-(aq) + 2H,O*(aq) Keq = 1.1 x 10-20 An aqueous solution containing 0.0521 M Pb2+ and 0.0521 M Ag* is saturated with H, S. Above what concentration of S²- will PbS precipitate? The Kyp of PbS is 8.9 × 10-29. [s²-] = M Above what concentration of S²- will Ag,S precipitate? The Kşp of Ag,S is 3.3 × 10-50. [s²-] = M If the pH of the solution is adjusted to 2.32, which species will precipitate from the saturated H, S solution? both PbS and Ag,S PbS neither species O Ag,S

The solubility product constant of calcium sulfate, CaSO4CaSO4, is 7.10×10−57.10×10−5. Its molar mass is 136.1 g/molg/mol. How many grams of calcium sulfate can dissolve in 49.0 LL of pure water?

Among the solubility rules previously discussed is the statement: Carbonates, phosphates, borates, andarsenates—except those of the ammonium ion and the alkali metals—are insoluble. (a) Write the expression for the equilibrium constant for the reaction represented by the equationCaCO_3(s) ⇌ Ca^2+(aq) + CO3^1−(aq). Is Kc > 1, < 1, or ≈ 1? Explain your answer. (b) Write the expression for the equilibrium constant for the reaction represented by the equation3Ba^2+(aq) + 2PO_4^3−(aq) ⇌ Ba_3(PO_4)_2(s). Is Kc > 1, < 1, or ≈ 1? Explain your answer.

Write the equilibrium constant expression, K, for the following reaction taking place in dilute aqueous solution. NH3 (aq) + H2O(1) =NH,* (aq) + OH(aq) K=-

At 25 °C, only 0.0110 mol of the generic salt AB2 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C? AB, (s) = A2+(aq) + 2B¯(aq)

The solubility product constant of silver carbonate at 25 degrees Celsius is 6.2 x 10^-12. Calculate the solubility of silver carbonate in g/L.

The traditional way of comparing reactions is by the percentage yields. However, percentage yield takes no account of by-products. In order to decide which chemical process is greener, chemists have tried to develop ways of measuring 'greenness'. One of the most common methods is the atom economy. Calculate the atom economy of the following reactions: (i). CH2 PhP-CH2 + Ph;P=0 (ii). OH 200 °C CI (in). CI- .CI NaOH (iv). он 0.5 O2. Me catalyst Ph + H20 Me Ph (Ph = phenyl (-C,Hs); and Me = methyl (-CH)) (v). NO2 Ni (cat.) NH2 3H, 2 H,0 300 °C. 5 psi

The pH of a saturated solution of nickel(II) hydroxide, Ni(OH)2, was found to be 9.20. From this, find Kp for nickel(II) hydroxide. Km =[

Consider an amphoteric hydroxide, M(OH)2(s) , where M is a generic metal. M(OH)2(s)↽−−⇀M2+(aq)+2OH−(aq)?sp=6×10−16 M(OH)2(s)+2OH−(aq)↽−−⇀[M(OH)4]2−(aq)?f=0.06 Estimate the solubility of M(OH)2 in a solution buffered at pH = 7.0, 10.0, and 14.0.   solubility at pH = 7.0 M   solubility at pH = 10.0 M   solubility at pH = 14.0 M