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- The following are equivalent ways of asking about the acidity of an H atom: • What is the most acidic H on the molecule? • Which H is associated with the published pKa value? • Which H on the molecule is easiest to remove? • Which H on the molecule takes the least energy to remove? • Which bond to an H is most polarized? • For which H atom is removal least uphill in energy? • Which bond to an H atom, when broken, results in the lowest PE conjugate base? We will often find the last of these questions is easiest to answer. To do this, find all the different Hatoms on the molecule, and draw all possible conjugate bases.Only the lowest-energy one is the “real” conjugate base. Identify this structure, and you have found the most acidic H. Use this strategy to find the most acidic H on each of the following molecules. Note: Each structure hasat least three different kinds of H’s, so draw at least three unique conjugate bases for each.4 5. Rank the following molecules in order of increasing acidity of the most acidic proton in each. You can always look for similar structures on the pK, table to help you out! alle ohl A All CCl3E. What is the conjugated base of each of the following acids in water: HClO4; H2S; HCO3-; H2PO-4F. What is the conjugated acid of each of the following bases in water: SO4-2; H2O; HCO3-; HPO4-2
- 2A. Rank the following compounds with increasing acidity: (1 = least acidic; 3 = most acidic) Me Me Mo Me (c) Se H. (d) H. .H H.Part A Arrange the following solutions in order of increasing basicity: Rank solutions from least basicity to greatest basicity. To rank items as equivalent, overlap them. Reset Help KOH KCHO2 C;H;NHNO, KBr (C,H;);NHB. Least basicity Greatest basicity4. Rank the following compounds in decreasing (strongest to weakest) order of basicity. NH₂ O₂N || NH₂ NH₂ B. II > III >> IV E. III >II>I>IV 11 ||| A. I> ||| > || > IV D. IV > III >II>I 5. Predict the product for the following reaction. CN H₂/Ni NH₂ NH₂ A. IB. II C. III D. IV E. I and II IV NH₂ C. IV> | > | > IV CN IV "NH₂
- In the following reaction, the acid reactant is and its conjugate base product is + CH3COO + NHÀ CH3COOH + NH3 A. CH3COOH; CH3COO™ B. NH3; NH4+ C. CH3COOH; CH3COO™ D. NH4¹; NH3 B O A OD3. Rank the following groups of species in terms of increasing acid strength: Answers in parentheses a) H₂O, H₂S, and H₂Se. b) HBrO2, HBrO, HBrO3 c) CF3COOH, CH³COOH, CCI³COOH, CHCI₂COOHb My Questions | bartleby O Dashboard O Course: Chem 120 - Organic Che X O LOCAL clicker + -> A cpp.edu/~Isstarkey/local/clicker/bonding/acid-base.html What is the most acidic proton in methanol, CHOH Which is the stronger base? Explain briefly. (H, or H,)? Explain briefly (CB = Conjugate Base). NH3 NH2 H-0-C-H H. ammonia aniline A) H, is more acidic. Because carbon is less clectronegative, CB-b is more stable than CB-a. A) Because this is more stable: aniline is the stronger base. -NH2 B) H, is more acidic. Because carbon is less electronegative, H, is more stable than Hp- B) Because this is more stable: ammonia is the stronger base. -NH2 C) H, is more acidie. Because oxygen is more electronegative, CB-a is more stable than CB-b. C) Because this is more stable: NH3 aniline is the stronger base. D) H, is more acidic. Because oxygen is more electronegative, H, is more stable than Hp. D) Because this is more stable: NH2 ammonia is the stronger base. E) H, is more acidic. Because oxygen…
- Which of the following is the strongest acid? (Note: acidic H in each molecule is indicated by an arrow). CH3 CH3-C-CH3 1 Select one: O A. I O B. IV O C. II O D. III :0: CH3-C-CH3 || CH₂ CH3-C-CH3 ||| CH3 CH3-C-CH3 CH3 IVLabel each molecule according to increasing acidity with 1 as the weakest and 4 as the strongest based on their structure. Explain.Label all of the acidic hydrogen. (Do not count any of the ones that are not shown) bns 2001320 Circle the one that is the most acidic kne noltamoino siano ws Explain, using CARDIO, why it is the most acidic. H H H H N. H. H H stasib was baie vincul CI 6057 enim09 ogmo) ons nod:6) istim relev H S WH bus il basi WH Uns 2506 A to