Exam_3_sp07 - Chemistry 162SG Exam III Student Name Recitation Section Number Recitation Instructor The exam has 25 questions for credit and an

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162SG EXAM III V1 SPRING “07” 1 Chemistry 162SG Exam III March 30, 2007 Student Name: _____________________ Recitation Section Number: ____ Recitation Instructor: _________________________ The exam has 25 questions for credit and an additional one to check the color of your exam booklet. Please answer all 26 questions on the OpScan sheet. There is no penalty for guessing. At the end of the 80-minute exam period, please hand in only this top sheet and your OpScan form. If you finish early, please do not disturb your fellow students. A proctor will check your picture-ID, OpScan form and signature during the exam. Exam scores and an exam curve will be posted as soon as possible. ON THE OpScan FORM: (Use a Number 2 Pencil or Darker) (1) SIGN your name across the TOP of the form. (2) code only the following information: [ blacken circles] (a) Your Name . . . LAST NAME FIRST [ blank space between last and first names ] (b) Your SOCIAL SECURITY NUMBER [Start under Box A and continue to Box I ] (c) Your RECITATION SECTION NUMBER (Boxes ) [Sections R1=51, R2=52, R3=53, R4 = 54 (d) Your EXAM FORM NUMBER (Box P ) Your EXAM FORM is: See last pages of exam for physical constants, periodic table, and other information.
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162SG EXAM III V1 SPRING “07” 2 1. In the titration of 20.0 mL of 0.200 M HOBr with 0.100 NaOH, what is the pH at the equivalence point? (K a HOBr) = 2.5 × 10 −9 ) A) 7.00 B) 3.29 C) 10.71 D) 4.40 E) 10.86 2. The solubility of silver carbonate is 0.032 M at 20°C. Calculate the K sp of silver carbonate, Ag 2 CO 3 . A) 3.3 × 10 −5 B) 1.0 × 10 −3 C) 5.0 × 10 −4 D) 1.3 × 10 −4 E) 6.5 × 10 −5 3. In the solution above a precipitate of CrF 3 , the concentration of Cr 3+ is 0.015 M. What is the concentration of F in the solution? (K sp = 6.6 × 10
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This note was uploaded on 12/19/2008 for the course CHEM 162SG 162 taught by Professor Vassillian during the Spring '08 term at Rutgers.

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Exam_3_sp07 - Chemistry 162SG Exam III Student Name Recitation Section Number Recitation Instructor The exam has 25 questions for credit and an

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