18. What is the equilibrium concentration of barium ions in a 1.0L solution of barium carbonate to which 0.25 mol gfK CO, has been added? Show the dissociation equation, the Ksp expression, and the calculation for determining the barium ion concentration. The Kp for barium carbonate is 5.0 x 10-9.
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- sited takeAssignment/takeCovalentActivity.do?locator assignment-take [Review Topics) [References] Use the References to access Important values If needed for this question. When 12.0 mL of a 1.03 x 10-4 M cobalt(11) nitrate solution is combined with 22.0 mL of a 1.71 x 10-4 M potassium hydroxide solution does a precipitate form? (Kap (Co(OH)2) = 2.5 × 10-¹6) OYes, the precipitate forms. ONo, the precipitate doesn't form. For these conditions the Reaction Quotient, Q, is equal to Submit Answer 0 Retry Entire Group 5 more group attempts remaining UpdateA 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?Which of the following is the expression for the solubility product of Fe2(CrO4)3? Ksp 2[Fe2+13 +3[CrO4³-1² O O Ksp=3[Fe2+]2[CrO4³-] OKsp=[2x Fe2+13[3 x CrO4³-12 Ksp [Fe2+]³[CrO43-1² Ksp=[Fe3+12[CrO4²-1³
- A solution contains anions with the following concentrations: 0.20 M CO, and 0.01 M Cr If a dilute AGNO3 solution is added to this solution, which is the first compound to precipitate? O a. None of the responses O b. Ag;CO; (Kap = 1.2 x 1012) %3D O C AGCI (K, = 1.8 x 10-19) O d. Both compounds will precipitate at the same time5. What concentration of acetate ion (CH3CO2') in 0.500 M CH3CO2H produces a buffer solution with pH = 5.00? (Ka = 1.8 x 10-5) CH;CO2H (aq) H20 (I) CH;CO, (aq) H30* (aq) + 6. A buffer solution is formed by adding 0.500 mol of sodium acetate (CH3CO2NA) and 0.500 mol of acetic acid (CH;CO2H) to 1.00LH,0. What is the pH of the solution at equilibrium? (K, 1.8 x 10°)1. Calculate the concentration of ions in the following saturated solutions: (a) [1'] in Agl solution with [Ag'] = 9.1 x 10° M; Ksp= 8.3 x 107 (b) [A*] in Al(OH); solution with [OH] = 2.9 x 10° M; Ksp = 1.8 x 10 33 2. 2.4414 g sample containing KCI, K;SO4 and inert materials was dissolved in sufficient water to give 250 mL of solution. A Mohr titration of a 50 ml aliquot required 41.36 ml of 0.05818 M AGNO3. A second 50mL aliquot was treated with 40 ml of 0.1083M NaB(CsHs)4. The reaction is NaB(CsHs)a + + KB(CsHs)4s) + Na*. The solid was filtered, redissolved in acetone, and titrated with K* 49.98mL of the AgNO: solution according to the reaction KB(C,H;). + Ag* + AgB(CsHs)46) + K*. Calculate the percentage of KCl and K:SO, in the sample. a. As a food chemist for a major potato chip company, you are responsible for determining the salt content of new potato chip products for the packaging label. The potato chips are seasoned with table salt, NaCl. You weigh out a handful of the chips…
- 1.) The solubility product, Ksp, of Cd3(PO4)2 is 2.5 x 10-33. What is the solubility (in g/L) of Cd3(PO4)2 in pure water? 2.) The solubility product of Cu(OH)2 is 4.8 x 10-20. Calculate the value of pCu2+, or -log[Cu2+], in an aqueous solution of NaOH which has a pH of 12.45 and is saturated in Cu(OH)2. 3.) The equilibrium constant for the formation of Cu(CN)42- is 2.0 x 1030. Calculate the value of pCu2+, or -log[Cu2+], if we were to dissolve 2.52 g of CuCl2 in 1.000 L of a solution 0.946 M in NaCN. The addition of CuCl2 does not alter the volume (the final volume is still 1.000 L).Calculate the molar solubility of SrC₂O4 in a solution that has a fixed H3O+ concentration of (Ksp (SrC₂O4) = 5.0 x 10-8, K₁ (H₂C₂O4) = 5.60 x 10-2, K2 (H₂C₂O4) = 5.42 x 10-5) a. 5.1 x 10-6 M. Molar solubility= b. 5.1 x 10-7 M. Molar solubility = c. 5.1 x 10-9 M. Molar solubility = d. 5.1 x 10-11 M. Molar solubility = M M M M چار 4A mixture containing only KCl and NaBr is analyzed by the Mohr method. A 0.3172-g sample is dissolved in 50 mL of water and titrated to the Ag,CrO4 end point, requiring 36.85 mL of 0.1120 M AgNO3. A blank titration requires 0.71 mL of titrant to reach the same end point. Report the %w/w KCl and NaBr in the sample.
- 1.Calculate the normality of the solutions containing 5.267g/L K2Cr2O7 (the Cr is reduced to Cr3+).(FW=294.19 g/mol) 2.A and B react as follows: A + B 2C. The equilibrium constant is 5.0 x 106. If 0.40 mol of Aand 0.70 mol of B are mixed in 1L, what are the concentrations of A, B and C after reaction? 3. The following data is given at a certain temperature:(1) 2N2 (g) + O2 (g) 2N2O (g) K1 = 1.2 x 10-35(2) N2O4 (g) 2NO2 (g) K2 = 4.6 x 10-3(3) ½N2 (g) + O2 (g) NO2 (g) K3 = 4.1 x 10-9Calculate the molar equilibrium constant, K for the reaction:2N2O (g) + 3O2 (g) 2N2O4 (g)An impure sample of KCIO, (FW = 122.5 g/mol) weighing 0.1353 grams was dissolved in 50.0 mL distilled water, added with KI & acid. The 1₂ formed was titrated with 38.00 mL of 0.1005 N Na₂S₂O3 with starch as indicator. Calculate the % (w/w) KCIO3 in the sample.The sulfur dioxide concentration in San Diego was measured at 81ppb. What is the pH of an aqueous aerosol in equilibrium with SO2 at 25°C?•KH= 1.4*10^-5 M/Pa for sulfur dioxide •Ka1= 1.6*10^-2 for H2SO3•assume HSO3- formation approximates H+ and is negligible compared to concentration of H2SO3 formedDo not use quadratic equation to solve and show all mathematical steps