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- Which cation, Q or R, do you think is the stronger acid? Why?Which ion in each of the following pairs is better leaving group? Why?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?Identify the reagents a-e in the following scheme:
- Protonated intermediates are common in more complex organic reactions. Which molecule when protonated is more acidic? (+) +) acetone diethyl ether acetone O diethyl etherWhich of the following compounds CANNOT serve as Michael acceptor? MeO A B5). 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)
