ExIIIV1SP05 - Chemistry 162SG Exam III April 1, 2005...

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Chemistry 162SG Exam III April 1, 2005 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 ) Y o u r E X A
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SPRING “05” 2 1. What is the percent ionization of HF(K a = 7.2 x 10 -4 ) in a solution containing 1.5 M HF and 2.0 M NaF? A. 0.025 % B. 0.036 % C. 0.043 % D. 0.058 % E. 0.079 % 2. In which of the following solutions is AgCl(s) more soluble? A. pure water B. solution containing NH 3 C. solution containing HCl D. solution containing NaCl E. solution containing AgNO 3 3. A buffer solution (500 mL) contains 0.40 M NH 3 (K b = 1.8 x 10 -5 ) and 0.80 M NH 4 Cl. To this solution, 0.10 mol of NaOH is added. What is the pH of the new solution? A.
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ExIIIV1SP05 - Chemistry 162SG Exam III April 1, 2005...

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