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- 3. The maximum buffering capacity is nearest to the pKa of the buffer. Explain why?Match the solubility of the following compounds. BaCO3 A or B NaCO3 A or B KOH A or B (NH4)2SO4 A or B A. insoluble B. solubleThe coefficients on balancing the following reaction will be. А-1 Pb(OH)2 + HCI -> H20 + PbCl2 a) 1,2,2,1 b) 2,1,1,2 c) 1,2,1,2 d) 2,1,2,1
- Review the reversible reactions given, along with the associated equilibrium constant Kat room temperature. In each case, determine whether the products or reactants are favored. A +B= CK=4.9 x 103 Choose... AgCl F Ag+ + Cl¯ Ksp=1.6 x 10-10 Choose.. CH3COOH CH3COO¯ +H* Ka=1.8 x 10-5 Choose... Al(OH)3 A1³+ Al* + 3 OH Ksp=3.7 x 10-15 Choose...Calculate the value of the equilibrium constant for each of the following reactions in aqueous solution. a) HC2H3O2 + OH- <--> C2H3O2- + H2O b) C2H3O2- + H+ <--> HC2H3O2 c)HCl + NaOH <--> NaCl + H2O and I need an actual value for Kc not just the Kc formula which I already know. thanks.7. The equilibrium constant of acetic acid in an aqueous solution of of concentration is given by : a) K = (CA?) / (Ao - A) c) K= (CA?) / (Ao + As) e) K = (CA²) /4 |b) K = (CA³) / A. (Ao - A) d) K = (C²A) / (Ao - Ac) 8. For a solution of 3.12 x103 mol/L CH;COOH the specific conductance = 1.49 x 104 S/cm, and molar conductance at infinite dilution = 325.76 S.cm?/ mol, Ka is a) 5.33 x 107 c) 0.146 e) 1.20 x 105 b) 7.85 x 10 d) 1.55 x 10-7
- Which of the followinf salts could be added to the PbCl2 solution to decrease Pb2+ concebtration, while not decreasing the Cl concentration? NaCl KNO3 PbNO3 CaSO4Which reagent directly reacts with substance to be titrated? Method – bromometry: Br2; I2; KBr; KBrO3;← < TETNS B Q CAN …. https://app.101edu.co [H3O+] O 2[H3O+] Кс Question 8 of 11 Construct the expression for Kc for the following reaction. CH3COOH(aq) + H₂O(1) ⇒ CH³COO¯(aq) + H³O*(aq) [H3O+]² = Drag the tiles into the numerator or denominator to form the expression. Each reaction participant must be represented by one tile. Do not combine terms. X 2[H3O+]² [H₂O] Q Q [H₂O]² h |a|a|Q| + 2[H₂O] RESET 2[H₂O]²2 [CH3COO-] 2[CH3COO-] [CH3COO-]² 2[CH3COO-1² [CH3COOH] 2[CH3COOH] [CH3COOH]² 2[CH3COOH]² T x + ⠀ Submit
- :In the following buffer solution CH3COOH 2 CH3CO0 + H+ CH3COO + H+ CH3COONA СНЗСОО + Na* h reaction occurs when few drops of HCl are added into the buffer CH3COOH becomes active and the reaction turns right .A O CH3COO- becomes active and the reaction turns right .B O CH3COO- becomes active and the reaction turns left.CC CH3COOH becomes active and the reaction turns left .D OO7) what is the pH at the equivalent point in the titration of 5 mmol Potassium acid phthalate dissolved in 100 d of water and titrated with o.1M NaOH 9 K,= 4 +r06 Ans.: 8.96Exc: Describe how you can prepare 250 ml solution of H,SO, has (0.1 N and 0.1M) if you know the sp.g is1.099 g, the percentage of acid is % 98 and M.wt. 98 g/mole.