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CH202 In Lab 08 Titration C..

CH202 In Lab 08 Titration C.. - CH202 In Lab 08 Titration...

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CH202 In Lab 08 Titration Curves (In-Lab) SCHNELL ZACHARY EUGENE CH202, section 005, Fall 2008 Instructor: weiming zheng TA Web Assign Current Score: 50 out of 50 Due: Tuesday, October 28, 2008 07:15 PM EDT The due date for this assignment is past. Your work can be viewed below, but no changes can be made. Important! Before you view the answer key, decide whether or not you plan to request an extension. Your Instructor may not grant you an extension if you have viewed the answer key. Request Extension View Key 1. 25/25 points Data Tables and In-Lab Questions Data Table A. Titration of KHP Concentration of KHP solution .2117 M Volume of KHP solution titrated 20.00 mL Concentration of NaOH solution .2066 M Calculated V eq of NaOH solution 20.49 mL Question 2a. From your titration curve, what is the experimental V eq for your KHP titration? Label the V eq on each copy of your KHP titration curve. Do not forget to subtract the initial buret reading when determining your V eq . V eq = 20.37 mL Question 2b. What is the percent difference between your theoretical and experimental equivalence volumes? % Difference = ((Calculated - Measured)*100)/Calculated % Difference = .604 % Data Table E (C in new manual). Calculated vs Measured pH's for KHP Titration mL of 0.20 M NaOH added Calculated pH (From prelab) Measured pH (From titration curve) 0.00 4.179 4.21 10.00 5.408 5.17 15.00 5.885 5.69 CH202 In Lab 08 Titration Curves http://www.webassign.net/[email protected]/student.pl?x=200812071...
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