A_B Practice Test4

A_B Practice Test4 - CHEM 1202 Sect 5 EXAM 2 Acid/Base...

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Spring 2002 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). Constants: Kw = 1 x 10 -14 1. What is the pH of a 3.75 x 10 -3 M NaOH solution? a. pH = 2.43 b. pH = 5.59 c. pH = 8.41 d. pH = 10.25 e. pH = 11.57 2. Given the following reaction, which statement is true in the forward direction? H 2 PO 4 - (aq) + CO 3 -2 (aq) HPO 4 -2 (aq) + HCO 3 - (aq) a. H 2 PO 4 - is the acid and HPO 4 -2 is its conjugate acid. b. HCO 3 - is the acid and CO 3 -2 is its conjugate base. c. CO 3 -2 is the base and HPO 4 -2 is its conjugate base. d. CO 3 -2 is the base and HCO 3 - is its conjugate acid. e. H 2 PO 4 - is the base and HCO 3 - is its conjugate acid. 3. What is the acid concentration, H 3 O + , in oysters if they have a pH of 6.2 ? a. 0.79
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A_B Practice Test4 - CHEM 1202 Sect 5 EXAM 2 Acid/Base...

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