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- Determine the dissociation constants for the acids. Express the answers in proper scientific notation where appropriate. Acid A: pKa = 6.0 Ka Acid B: pKa = 9.60 Ka = -2.0 Acid C: pKa Ka =Given a Ka value of 1.3 X 10-10 for phenol (a benzene with an alcohol group on it-aromatic alcohols are acidic-who knew?), what is its pKa? 7.20 8.75 6.80 9.8912. 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…
- 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…pKa values are different in different solvents. For example, the pKa of hydrofluoric acid (HF) in water is 3.45, but the pKa of hydrofluoric acid in DMSO (dimethyl sulfoxide) is 15.0. Choose the best explanation for the differenceIn my slide, there is a table summarizing the pKa values for different acids. (1) when ranking the acidity level (how strong the acids are), a low pKa means high acidity. Why is that? (2) Calculate the phosphoric acid solution pH when the ratio of [H2PO4-]/[H3PO4] is 0.8.
- For an acid HA with a pKa of 5.2, what is the ratio of the concentration of the conjugate base to that of the acid at pH 7.2.If the concentration of an acid in solution is 2.2 times larger than the concentration of its conjugate base, and the pH of the solution is 3.5, what is the pKa of the acid? Include the answer to 3 significant figuresThe pka values of 4 acids are given below. Acid НА1 НА2 НАЗ НА4 pka 4.76 3.45 7.63 5.23 Which of the following solutions does have the highest pH? a. 0.30 M A3 (aq) (conjugate base of HA3) O b.0.30 M A1" (aq) (conjugate base of HA1) OC. All the 0.30 M bases in this question have the same solution pH. O d.0.30 M A2" (aq) (conjugate base of HA2) O e. 0.30 M A4" (aq) (conjugate base of HA4)