OWO References apter 15: EOC stion 16 A solution is formed by mixing 50.0 mL of...
A solution is formed by mixing 50.0 mL of 8.9 MNaX with 50.0 mL of 6.2 x 10-3M CUNO3. Assume that Cut forms complex ions with X as follows: Cut (aq) + X-(aq) + CuX(aq) K1 = 1.0 x 102 CuX(aq) +X-(aq) + CuX2 (aq) K, = 1.0 x 104 CuX,- (aq) +X-(aq) + CuXg2- (aq) K3 = 1.0 X 10% with an overall reaction Cut (aq) + 3X-(aq) CuX, 2- (aq) K = 1.0 x 10° Calculate the following...
A solution is formed by mixing 50.0 mL of 9.6 MNaX with 50,0 mL of 1.0 x 108 M CuNO3. Assume that Cut forms complex ions with X as follows: Cu+ (aq) + X(aq) + CuX(aq) K1 = 1.0 x 102 CuX(aq) + X- (aq) + Cux,- (aq) Kg = 1.0 x 104 CuX2 - (aq) + X-(aq) = CuXg2- (aq) K3 = 1.0 x 108 with an overall reaction Cu" (aq) + 3X- (aq) + CuX, 2- (aq) K...
Chapter 15 COC Reference NO,Aume that Out forms complex ions with X as follows Destion 18 Destion 19 Question 20 A solution is formed by mixing 50.0 mL of 10.9 MNX with 500 ml of 8.6 x 10-M Out (g) + X() OXog K; -10 x 10 CuX(aq) + X() - Cux, (a) K; -1.0 x 109 CuX;" ) + X (a) Cux,- (aq) K; -1.0 x 100 with an overall reaction Cu* (eq) +3X" () - CuX; (aq) -10x10'...
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(15) A phosphate buffer solution is prepared by mixing 100. mL. of 0.300 M KH PO, and 150.ml 0.500 M K HPO (a) Calculate the molar concentrations of H:PO, and that of HPO,2 in the buffer solution. (b) What is the pH of the buffer solution? (H,PO, has K,-6.2 x 10 (c) Write a net ionic equation for the bufering reaction against a strong acid, Hjo (d) Calculate the new concentration...
4- (a) Calculate the concentration of Cd2+ ion in a solution prepared by mixing 2.0 mL of 1 M CA(NO3)2 solution with 1.0 L of 4.0 M NH3 solution. [Assume that the volume does not change after the addition of 2.0 ml of 1 M Cd(NO3)2] (b) Will you be able to see Ca(OH)2(6) precipitate in the solution? (Kr for Ca(NH3)42+ = 1.0 x 107, Kb for NH3 = 1.8 x 10-5; Ksp for Ca(OH)2 = 5.9 x 10-15 Cd2+...
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8. If S0.0 mL. of a 0.10 M solution of sodium chloride is mixed with 50.0 mL of 0.10 M magnesium chloride, what is the molar concentration of chloride in the resulting solution? a. 0.10M b. 0.20 M c. 0.05 M d. 0.15 M e. 0.25 M 9. What would be the products in the ionic equation for the following reaction? 2HBr(aq) + 2KOH(aq) → products 1. KTaq) and Br(aq); tl. KH(aq); III. H,0(1); IV KBr(s); V. BORI(aq); VI....
4. When 0.100 mol ammonia is dissolved in water to make a 500 mL solution, the following equilibrium is established NH3(aq) + H2O(0) - NH. (aq) + OH(aq) K = 1.8 x 10-5 a. Find the concentration of OH' and the pH of the solution at equilibrium. Remember: pOH = -log(OH) and pH + pOH = 14 b. Consider the following reaction: 2H2O(1) 2 H,0*(aq) + OH(aq) K = 1.0 x 10-14 Write the equilibrium expression and find the value...
A solution is prepared by mixing Mt moles of the salt MCl2 (which dissociates completely to M2+ + 2Cl-) and Lt moles of the ligand HL in 1 L. The following reactions may occur: M2+ + L-= ML+ K= 1.0 * 10^8 HL(aq)=L- +H+ Ka = 1.0*10^-1 write a mass glance for the metal species write a mass balance for ligand species write a charge balance Suppose that Mt=Lt =0.1 M and the pH is somehow fixed at 5.00 use...
15. The mixing of which pair of reactants will result in a precipitation reaction? CsI(aq) + NaOH(aq) HCl(aq) + Ca(OH)2(aq) K2SO4(aq) + Hg2(NO3)2(aq) NaNO3(aq) + NH4Cl(aq) 16. Which of the following is a precipitation reaction? Zn(s) + 2 AgNO3(aq) 2 Ag(s) + Zn(NO3)2(aq) NaCl(aq) + LiI(aq) NaI(aq) + LiCl(aq) 2 KI(aq) + Hg2(NO3)2(aq) Hg2I2(s) + 2 KNO3(aq) HI(aq) + NaOH(aq) NaI(aq) + H2O(l) None of these are precipitation reactions. 17. Which...
Questions 22-24 refer to the following information. A group of students was asked to recover Cu(s) from a blue-green aqueous solution containing an unknown concentration of Cu (aą). The students took a 100.0 ml sample of the solution and added an excess of 1.0 M Na PO(aq), causing the Cu?(aą) to precipitate as Cu,(PO,)(s), as shown in step I below Step l Blue-green Cu (aq) Colorless Blue-green Cu3(PO)2(5) 10 M Na PO (a 3 Cu(ag) 2 Na,PO, (ag)Cu(P0))+ 6 Na...