A_B Practice Test1

A_B Practice Test1 - CHEM 1202 Sect 1 EXAM 2 Acid/Base...

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CHEM 1202 Sect 1 Fall 2003 EXAM 2 Acid/Base Equilibria Dr. Kolniak FORM 1 IMPORTANT: On the scantron sheet fill in your name ( LAST name first) and ID number in the box and bubble in the corresponding letter and number. Ask a question , if you are not sure about what to do or if you are confused about the content of the problem. Select the very best answer (7 pts each or 6.25%). Constants: Kw = 1 x 10 -14 1. Given the following acids and their associated pKa’s, which one would produce the strongest conjugate base? a. HCOOH (pKa = 3.8) b. HNO 2 (pKa = 3.3) c. H 3 PO 4 (pKa = 2.1) d. H 2 CO 3 (pKa = 6.4) e. H 2 SO 3 (pKa = 1.8) 2. Given the following reaction, which statement is true in the forward direction? NH 3 (aq) + HSO 4 - (aq) NH 4 + (aq) + SO 4 -2 (aq) a. NH 3 is the acid and NH 4 + is its conjugate acid. b. HSO 4 - is the acid and SO 4 -2 is its conjugate base. c. NH 3 is the base and HSO 4 - is its conjugate acid. d.
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This note was uploaded on 10/20/2011 for the course CHEM CHEM 1202 taught by Professor Situma during the Spring '09 term at LSU.

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A_B Practice Test1 - CHEM 1202 Sect 1 EXAM 2 Acid/Base...

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