What mass of ZnS (Ksp = 2.5 × 10-22) will dissolve in 300.0 mL of 0.050 M Zn(NO3)2? Ignore the basic properties of S2-.
Answer to relevant QuestionsThe concentration of Mg2+ in seawater is 0.052 M. At what pH will 99% of the Mg2+ be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 × 10-12.] When aqueous KI is added gradually to mercury(II) nitrate, an orange precipitate forms. Continued addition of KI causes the precipitate to dissolve. Write balanced equations to explain these observations. (Hint: Hg2+ reacts ...Tris(hydroxymethyl)aminomethane, commonly called TRIS or Trizma, is often used as a buffer in biochemical studies. Its buffering range is from pH 7 to 9, and Kb is 1.19 × 10-6 for the reaction a. What is the optimum pH for ...The copper(I) ion forms a complex ion with CN- according to the following equation: Cu+(aq) + 3CN-(aq) ⇌ Cu(CN)32-(aq) Kf = 1.0 × 1011 a. Calculate the solubility of CuBr(s) (Ksp = 1.0 × 10-5) in 1.0 L of 1.0 M NaCN. b. ...Consider the following statements. Write out an example reaction and K expression that are associated with each statement. a. The autoionization of water. b. An acid reacts with water to produce the conjugate base of the ...
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