For the following acid-base reaction, predict which side of the equilibrium is favored. H u.of-u.a CH -N-H N favor left side favor right side neither H
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- Summarize the relationship between pKa and base strength by completing the followingsentences: a. For a given base, the higher the pKa of its conjugate acid, the stronger or weaker the base. b. For a given base, the lower the pKa of its conjugate acid, the stronger or weaker the base.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.Complete the equation for the reaction between each Lewis acid-base pair. In each equation, label which starting material is the Lewis acid and which is the Lewis base; use curved arrows to show the flow of electrons in each reaction. In doing this problem, it is essential that you show valence electrons for all atoms participating in each reaction. (a) (b) (c) (d)
- For the previous four questions, label each molecule that appears in the question or your answer asstrong acid, strong base, weak acid, or weak base.which of the following molecules would be the strongest base, and which would be the weakest base? NH A. B C D. a. C - strongest base, and D - weakest base b. C - strongest base, and B - weakest base C. A - strongest base, and D - weakest base d. D- strongest base, and A - weakest base e. B - strongest base, and Cweakest base f. D- strongest base, and C- weakest baseDraw the products(and reaction arrow) for the acid-base reaction. Which side of the equilibrium will be favored? Why?
- arrange from strongest to weakest acid1. What is the general dissociation reaction of acid? 2. Write the acid reaction species of the reaction on the table. 3. What is the general dissociation reaction of base? 4. Write the base reaction species of the reaction on the table.In equilibrium, label the stronger acid, the stronger base, the weaker acid, and the weaker base. Also estimate the position of equilibrium.
- For the following acid-base reaction, predict which side of the equilibrium is favored. OH favor right side favor left side neither + H₂O + + H₂OExplain why an acid-base reaction will only proceed if the products formed are weaker conjugate acid and base compared to the starting acid and base.Rank the bold-faced hydrogens for the following compounds from most acidic to least acidic. H I O A. II > IV> ||| >V>I OB. II > IV> V> ||| > I OC. IV>II> I > V > III O D.V> III > IV> || > | OE. IV>II> ||| > V > I II CI CO₂H CKH Н III W n IV CO₂H