Practiceproblems3 - 51A Practice Problems 3 Fall, 2010 1....

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51A Practice Problems 3 Fall, 2010 1. Draw curvy arrows for the following Acid-Base reaction. Determine the direction of equilibrium using the pKa’s given in class rounded to the nearest 5. Label all acids and bases, conjugate acids and conjugate bases. Give the approximate ratio of reactants to products at equilibrium. CH 3 C O CH 3 C O O + + NH 4 H NH 3 2. HI is a stronger acid than HF, but CH 2 FCO 2 H is a stronger acid than CH 2 ICO 2 H. Explain. 3. Identify nucleophiles and electrophiles in each of the following reactions. Which compounds are also Lewis acids and bases? Which compounds are also Brönsted acids and bases? CH 3 CH 2 SCH 3 + BF 3 BF 3 a. CH 3 CH 2 SCH 3 C + I C I b. C + HI C H c. + I Previous test questions: 4. Complete the following acid-base reaction and use an arrow to show in which direction the equilibrium lies. Use pK a values to help you determine your answer. + + CH 3 CH 2 OH NH 4 What is the weakest base in the above reaction? What is the approximate ratio the reactants to products at equilibrium in this reaction?
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This note was uploaded on 11/23/2010 for the course CHEMISTRY Chem 51A taught by Professor Dr.susanm.king during the Fall '10 term at UC Irvine.

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Practiceproblems3 - 51A Practice Problems 3 Fall, 2010 1....

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