lab 5 - Post-Lab Data Summary Note : some questions will...

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Post-Lab Data Summary Note : some questions will display a variable like "nCount" or "SyInput" instead of an actual number in the data summary. Q# Question Text 4) Scoring Scheme: 3-3-2-1 Part I. What volume in mL of 6 M acetic acid is needed to make 1L of 0.1 M acetic acid? Please express your answer to 3 significant figures. V = Your Answer: 16.7 You Scored 3 points out of 3 Possible 5) Data Entry - No Scoring Part II. How many trials for the determination of the titration curve of acetic acid by sodium hydroxide did you perform? Trials = Your Answer: 1 No Points Possible 6) Data Entry - No scoring Part II. What was the average molarity of your NaOH solution when you standardized it with KHP in the Strong- Acid/Strong-Base titration experiment? Report your answer to 2 significant figures. M(NaOH) mol/L = Your Answer: 0.14 No Points Possible 7) Data Entry - No scoring Part II. For each of your trials, what was the initial volume in mL of the acetic acid solution that you used? Enter your data to 4 significant figures, e.g. 30.06. Your Answer: 30 No Points Possible 8) Data Entry - No Scoring Part II. To answer this question, you will have had to complete the processing of your titration curve data with a spreadsheet program. Using only the titration curve itself, estimate the volume in mL of NaOH to 4 significant figures required to reach the equivalence point of the curve for each of your trials. Your Answer: 16 No Points Possible 9) Data Entry - No Scoring Part II. Using only the titration curve itself, estimate the pH at the equivalence point for each of your trials.
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Report your values to 3 significant figures, e.g. 8.84 Your Answer: 10 No Points Possible 10) Free Response: 2 pts. Part II. In the text box provided, write a paragraph that compares and contrasts the titration curves from the strong acid - strong base titration with the titration curves you obtained in this experiment. Be sure to remark upon the pH of the equivalence point for each and the slope of the curve at the equivalence point. Your Answer: The titration curves for both the strong acid and weak acid were the same however the equivalence point required more solution with the weak acid, resulting in the graph cutting off more abruptly. Other than that, the first and second derivatives all matched up as well ignoring minor slope changes. Text Answers to be Scored by your TA
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lab 5 - Post-Lab Data Summary Note : some questions will...

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