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Exam 3 Version 1

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Unformatted text preview: Page 1 ot S < ; Your location: Assessments > V ieuM Submissions > View Attempt View Attem pt 1 o f 1 Title: Exam 3 Started: April 27, 2010 5:16 PM Submitted: April 27, 2010 6:16 PM Time spent: flOj59;52 Total score: 11/20 = 55% j Total score adjusted by 0.0 | Maximum possible score: 20 Done What Is the solubility in moles/liter for calcium hydroxide at 25 °C given a K value of 5.5 x 10" 6 . Write using scientific notation and use 1 or 2 decimal places (even though this is strictly incorrect I) Student Response 1. 1.1E-2 Value Correct Answer 100% Equals l.lle -2 (100%) Equals l.le -2 (100%) Score: 1/1 What is the solubility of silver chromate (K sp = 1.8 x 10' 12 ) In a solution of 0. nitrate? 10 M silver A. . _ _ . C. 0. E- Student Response 1,8 x 10~ n 4.5 x 10' 11 1.3 x 10' 6 7.7 X 10" s l.Sx 10~ 10 Value Correct Answer 0% D Score: 0/1 A solution is 0.10 M AgN0 3 and 0.20 M Sr(NO 3 ) r If solid Na 2 SO 4 Is added to the solution, what Is tSr 2+ ] when Ag 2 SO 4 begins to precipitate?^ SrSO 4- 3.2 x 10' 7 ; Ag 2 SO 4 = 1.1 x 10' 5 ) Student Response • 3.3 X 10" 3 Value Correct Answer https://learn.uh.edu/webciy'urw/lcn2945703902i.tpl!2946001602IA'iewStudcntAttempt.d.,. 5/3/2010 view Attempt Page 2 o fl B- 2.9 X_10" 4 C- 1.6 xlO ' 6 D- 1.3 x 10' 3 _£__5.7 x 10^_ Score: 1/1 100% H Which of the following compounds will have a different solubility with a change In pH? Student Response i 1 . AgN0 3 2. CaCI 2 3, Ca(OH) 2 4, CuCI 5. Hg 2 CI 2 Score: 0/1 Value Correct Answer 0% 5. Which of the following processes has a negative value of delta S?...
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