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- Thioglycolic acid, HSCH2CO2H, a substance used in depilatory agents (hair removers) has pKa = 3.42. What is the percent dissociation of thioglycolic acid in a buffer solution at pH = 3.0?Summarize the relationship between pKa and acid strength by completing the following sentences: a. The higher the pKa of an acid, the stronger or weaker the acid. b. The lower the pKa of an acid, the stronger or weaker the acid.The key step in a reported laboratory synthesis of sativene, a hydrocarbon isolated from the mold Helminthosporium sativum, involves the following base treatment of a keto tosylate. What kind of reaction is occurring? How would you complete the synthesis?
- b) Name the following molecule, excluding stereochemistry ОН .Cl 4-chloro-1- Rbhei-2- c) Provide the IUPAC name for the molecule shown here with correct stereochemistry: CH3 SH d) Rank the following in order of increasing basicity in the gas phase (least basic to most basic): N. NH2 NH2 NH2 D F CRank the following compounds in order of decreasing basicity ( N' NH NH CProtonated intermediates are common in more complex organic reactions. Which molecule when protonated is more acidic? (+) +) acetone diethyl ether acetone O diethyl ether
- 5). Which of the following compound has lowest pKa? H3C (A) COOH F (B) COOH 6). What is the product nhtained from the full COOH (C) COOH (D) COOH (E)7. For each draw the mechanism (using arrows) and label acid, base, conjugate acid, conjugate base :0: NH3 :OH H,ö:ctice 2 W S F2 3.6 Position of Equilibrium and Choice of Reagents Predict the position of the equilibrium for the reaction and provide a brief explanation. (The acidic protons are shown in red.) & & & & O Reverse direction is favored because B is better stabilized by resonance, making B the stronger base and D the weaker acid. Forward direction is favored because B is better stabilized by resonance, making B the weaker base and D the stronger acid. O Forward direction is favored because B is better stabilized by resonance, making B the stronger base and D'the weaker acid. O Reverse direction is favored because B is better stabilized by resonance, making B the weaker base and D the stronger acid. Hint Save for Later # 3 E 80 F3 B $ 4 R C % 5 6 MacBook Air & 7 F7 * 8 DII FB 9 FO ) 0 Submit Answer F10
