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- The dissociation constant, ka, of a weak acid is 5.9 x 10-6. What is the pKa of the acid?Salts containing the phosphate ion are added to municipal water supplies to prevent the corrosion of lead pipes. Based on the pKa values for phosphoric acid (pKa1 = 7.5 * 10-3, pKa2 = 6.2 * 10-8, pKa3 = 4.2 * 10-13) what is the Kbvalue for the PO43- ion?Ksp
- What is the pKa of an acid? As the pKa value increases, does the acid strength increase or decrease? Explain.A student determines that the value of Ka for H2SO3 = 2.3×10-2 . What is the value of pKa?4. Acid A has a pKa value of 5.71, and acid B has a pKa value of 5.30. Which of the two acids is the weaker?
- What is the Ka of an acid that has a pKa value equal to 3.93?12. Bicine is an organic compound used as a buffering agent. It is one of Good's buffers and has a pKa of 8.354 at 25 °C. The molecular formula of bicine is C6H13NO4. Bicine can react with Ba(OH)₂ according to the following reaction. 2 C6H13NO4 + Ba(OH)2 → Ba(C6H12NO4)2 + 2 H₂O It took a student worker 3 steps to make a buffer solution. First, a bicine solution is made by dissolving 37.47 grams bicine in enough water. The total volume is 200.00 mL. Then 250.00 mL Ba(OH)2 solution is prepared by adding 36.57 grams Ba(OH)2 solid and enough water. At the end, a buffer solution is made by mixing 157.89 mL of the above bicine solution and 89.32 mL of the above Ba(OH)₂ solution. A. B. Determine the equilibrium concentration of bicine in the buffer solution. Please provider your answer below. Determine the equilibrium concentration of Ba(C6H₁2NO4)2 in the buffer solution. Please provider your answer below. Determine the pH of the buffer solution. pH = Please provider your answer below. 0² 0₂…12. Bicine is an organic compound used as a buffering agent. It is one of Good's buffers and has a pKa of 8.354 at 25 °C. The molecular formula of bicine is C6H13NO4. Bicine can react with Ba(OH)2 according to the following reaction. 2 C6H13NO4 + Ba(OH)2 → Ba(C6H12NO4)2 + 2 H₂O It took a student worker 3 steps to make a buffer solution. First, a bicine solution is made by dissolving 37.47 grams bicine in enough water. The total volume is 200.00 mL. Then 250.00 mL Ba(OH)2 solution is prepared by adding 36.57 grams Ba(OH)2 solid and enough water. At the end, a buffer solution is made by mixing 157.89 mL of the above bicine solution and 89.32 mL of the above Ba(OH)2 solution. A. B. C. Determine the equilibrium concentration of bicine in the buffer solution. Please provider your answer below. A of Ba(C6H12NO4)2 in the buffer solution. Check answer Determine the equilibrium concentration M Please provider your answer below. A pH = Please provider your answer below. A $ Check answer…
- Use a calculator when necessary to answer the following questions. a. What is the pKa for each Ka: 10−10, 10−21, and 5.2 × 10−5? b. What is the Ka for each pKa: 7, 11, and 3.2?Strong base is dissolved in 615 mL of 0.200 M weak acid (Ka = 3.46 x 10-5) to make a buffer with a pH of 3.97. Assume that the volume remains constant when the base is added. HA(aq) + OH(aq) → H₂O(l) + A¯(aq) Calculate the pKa value of the acid, and determine the number of moles of acid initially present. pK₁ = initial amount: mol HA When the reaction is complete, what is the concentration ratio of conjugate base to acid? [A-] [HA] How many moles of strong base were initially added? amount added: O III 66°F O 1) mol OH J 5:55 PM 6/2/2022You are viewing Sonjae Wallace's screen REC View Options Q8: Level 3+ (Unit 13, L.G. 11) Given the following information: O1 + H,0 = HOI + OH H,0 = %H;0* + ½OH K, = 5 x 104 K2 = 1 x 107 What is the value of K for the rxn HOI + H,0 = 01+ H,0*? A. 2 x 10-11 B. 5 x 10 11 C. 2x 10-4 D. 4 x 104 To: Type P Type here to search a brt %23 * 4 5 Q Y. LL M alt alt ctri
