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- A 0.8000-g sample of iron ore containing 21.00% Fe is analyzed gravimetrically. If the final precipitate (assumed to be Fe;03) contains 20.0 mg of Al;O3 by mistake, what percentage of Fe does the analyst find?(a) I f t he molar solubilit y o f CaF2 at 35 °C i s1.24 x 10-3 mol/L, what is Ksp at this temperature? (b) It isfound that 1.1 x 10-2 g SrF2 dissolves per 100 mL of aqueoussolution at 25 °C. Calculate the solubility product forSrF2. (c) The Ksp of Ba(IO3)2 at 25 °C is 6.0 x 10-10. What isthe molar solubility of Ba(IO3)2?(a) The molar s o l u b i l it y o f PbBr2 at 25 °C i s1.0 x10-2 mol/L. Calculate Ksp. (b) If 0.0490 g of AgIO3 dissolvesper liter of solution, calculate the solubility-productconstant. (c) Calculate the pH of a saturated solution of Ca(OH)2.
- The corect solubility product expression for A(SO,), is: A) K = (x) (2x) D) K, = (2x) (x) B)K, = (4x)(2x)? E) K, = (x) (2x) C) K, = (x)² (2x) F) K, = 2x %3D %3D O A O E O F B O D(a) If the molar solubility of Tl2S at 25 oC is 5.31e-08 mol/L, what is the Ksp at this temperature?Ksp = (b) It is found that 1.75e-06 g of Cu3(AsO4)2 dissolves per 100 mL of aqueous solution at 25 oC. Calculate the solubility-product constant for Cu3(AsO4)2.Ksp = (c) The Ksp of BaCO3 at 25 oC is 2.58e-09. What is the molar solubility of BaCO3? solubility = ____ mol/L(b) The solubility product, Ksp of silver chloride, AgCl is 1.0 x 10-10. What is the solubility of AgCI in g L-1?
- Which of these expressions correctly expresses the solubility-product constant for Ag,PO in water? (a) [Ag][PO.] (b) [Ag][PO] (c) [4g"]³[PO³] (d) [4g^][PO] (e) [4g"][ PO, P(a) If the molar solubility of YF, at 25 °C is 4.23e-06 mol/L, what is the Kep at this temperature? Ksp (b) It is found that 5.73e-05 g of Znj(AsO4)2 dissolves per 100 mL of aqueous solution at 25 °C. Calculate the solubility product constant for Zn (ASO4)2- Kap- (c) The Kap of ZnCO, at 25 °C is 1.46e-10. What is the molar solubility of ZnCO₂? solubility mol/Lapp.101edu.co Question 16 of 25 A 185.0 mL sample of 1.200 M Pb(NO3), is mixed with 139.50 mL of 1.500 M NaCl, and the PbCl, precipitate is filtered from the solution. Then 200.0 mL of 3.000 M NaBr is added to the remaining solution, and the PbBr2 precipitate is also collected and dried. What is the mass (in grams) of the PbBr2 precipitate, assuming the yield in each precipitation step is 100%? 1 3 6. 8. 6. +/- 2. LO
- 5:23 O13%DE elearning.yu.edu.jo/m O A student was given 2 beakers labeled with numbers 1 and 2, each beaker contains a clear solution. Additionally, he was given two reagent bottles labeled with A and B. Now, he added reagent A to both beakers and he noticed the formation of a precipitate in beaker 2 but not in beaker 1. However, the addition of reagent B to both beakers resulted in the formation of a precipitate in beaker 1 but not in beaker 2. Based on the information, which of the following is correct? a. compound A is the limiting reactant in beaker 1. b. compound B is the limiting reactant in beaker 2. c. compound A is the limiting reactant in beaker 2. d. compound B will be the excess reactant in beaker 1. Question 2HF(g) + H,O(1) H,0*(aq)+ F"(aq) K = 1.1 x 10-3 F (aq) + HF(g) HF;(ag) K= 2.6 x 10- a. Is fluoride in pH 7.00 drinking water more likely to be present as F"(aq) or HF2 (aq)? O HF2 (aq) O F(aq) b. What is the equilibrium constant for this equilibrium? Number 2 HF(g) + H,0(1) H,0*(aq) + HF, (aq) c. What are the pH and equilibrium concentration of HF2" in a 0.150 M solution of HF? (HF, - Number Number pH = M Check Answer View SolutionTamples of NaP (a) and NIL,CI () re dissolved n separate beakers that each contan 100 ml.of water One of the salts produces a slghtly ackde sotion which of the fulowing quatens best represents the formation of the slightly acide solution Na' (ag) + 21,0() NaOH (ag) + H,0 (ag) F (ag) + H,O()HP(ag) +OH (ag) c) NH, (ag) + H,0 ()= NH, (ag) + H,0" (ag) CI (ag) + H,0() HC(og) + OH (ag)
