НО НОО НООН Н.о НОО RC=CH RC-C + НООН

Provide the approximate pK, of the following and indicate the most acidic hydroge (a) CH3-NH-CH3 (b) CH3-C=CH (c) CH3-COOH (d) CH3-CH2-OH

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…

Consider the following equilibrium: O || R-C-H + HCN HO OH R-C-H | CN (A) When R = CH3CH2-, Keq = 1. (i) Predict whether Keq should be greater or less than 1 when R = CICH2, and (ii) when R is CH2=CH. Explain. (B) In the case where R is CH2=CH, the cyanohydrin is formed faster but given enough time, another constitutional isomeric C4H5NO product predominates. Explain and write a base-catalyzed mechanism for the formation of the other isomer. Recall that: HO HON N