Question 22 (4 points) Saved The Ksp of Pbs is 2.5x10-18. What concentration of S2- is...
Ksp = 2.5x10-13 for Pb(103)2 at 25 °C. Calculate the molar concentration of iodate ions in a saturated lead(II) iodate solution at 25°C using the assumption that the solution is ideal -- i.e. the activity coefficients are 1. (Your answer should be precise to three sig figs.) Submit Answer Tries 0/5 Still assuming an ideal solution, what mass of Pb(103)2 would be dissolved in 100. mL of saturated solution at 25 °C? (Your answer should be precise to three sig...
A solution contains 2.2×10−4 M Ag+ and 1.7×10−3 M Pb2+. If NaI is added, will AgI(Ksp=8.3×10−17) or PbI2(Ksp=7.9×10−9) precipitate first? AgI. My question is: Specify the concentration of I− needed to begin precipitation.
Please help with chemistry 17. Find the new K value for the combined solubility equilibrium and formation equilibrium reactions when the Ksp for PbCO, is 7.4x10M and the K, for the [Pb(GOJ2]2-complex ion is 3.5x106. (C2042-?S the bidentate oxalate ligand.) The K, for the complexion Pb(EDTA)2-is 2.0x108. Analysis shows a solution at equilibrium contains [Pb(EDTA?] = 0.0011 M, [EDTA"] = 0.88 M, and [Pb2+]s 6.25×10-22 M. what concentration of sulfide ion will just start the precipitation of PbS(s) from the...
above what Fe2+ concentration will Fe(OH)2 precipitate from a buffer solution that has a pH of 8.42? the Ksp of Fe(OH)2 is 4.87x10^-17 Question 28 of 31 > Attempt 6 - Above what Fe2+ concentration will Fe(OH), precipitate from a buffer solution that has a pH of 8.42? The Kp of Fe(OH), is 4.87x10-17 [Fe2+1 = 1.95 x10-11
41. -/0.1 points 0/4 Submissions Used A solution of Na 3ASO4 is added dropwise to a solution that is 0.0219 M in Cu2+ and 0.0491 M in Ag+ The Ksp of Cu3(AsO4)2 is 7.95e-36. The Ksp of Ag3AsO4 is 1.03e-22. (a) What concentration of AsO43- is necessary to begin precipitation? (Neglect volume changes.) [AsO43- М. (b) Which cation precipitates first? Cu2+ Ag (c) What is the concentration of AsO43 when the second cation begins to precipitate? [AsO43- М.
29. -10.1 points 0/4 Submissions Used A solution of Na3AsO4 is added dropwise to a solution that is 0.0361 M in B13+ and 0.000122 M in Cd2+. The Ksp of BiAsO4 is 4.43e-10. The Ksp of Cd3(AsO4)2 is 2.2e-33. (a) What concentration of AsO43- is necessary to begin precipitation? (Neglect volume changes.) [A5043-) = M. (b) Which cation precipitates first? O Bi3+ OCd2+ (c) What is the concentration of AsO43- when the second cation begins to precipitate? [A5043-) =
Question 4 07 1.5 pts What is the concentration of Pb2+ in a saturated solution of PbCl2 in 0.10 M KCl solution. (Ksp = 1.4 x 108)? Why is [Pb2') in this question (smaller/larger) than in Question 3? Hint: What is the initial [CI] before PbCl2 is dissolved? because the presence of chloride ion prevents the dissolution 1.4 x 10M of PbCl2 1.5 x 10M same as in Question 3 1.4 x 10-M, because the presence of chloride ion slows...
If the Ksp for AgNO2 is 8.5×10−4, and the silver ion concentration in solution is 0.0050 M, what does the nitrite concentration need to be (in units of moles per liter) for a precipitate to occur? ?M
QUESTION O Solution has [H30+1 = 2.5x10-4 M. What is [OH in this solution? Give your answer in exponential format, og number 2.5x10-4 must be entered as 2.50-4.
2. Which compound has the highest molar solubility in neutral aqueous solution? (A) ZnS. Ksp-3x10-23 (B) Agl, Ksp 8.52x10-17 (C) BaCO, Ksp 2.58x10 ) Fe(OH)3, Ksp-2.79x10-39 (E) Pblz, Ksp 8.7x10 3. A solution contains 0.01 M Pb2+ and 0.01 M Agt What happens when Na SO(s) is added to bring SO1 to 0.01 M? (Kp(PbSO.)-1.6x10-8. Ksp(Ag SO4) 4x10.) Neither PbSO4 nor Ag SO4 precipitate (B) Both PbSO4 and Ag SO4 precipitate (C) AgaSO4 selectively precipitates. (D) PbSO4 selectively precipitates. 4....