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3. how would the following errors affect the concentration of Cl- obtained in question 2b? give your reasoning in each case. a. the student read the molarity of AgNo3 as 0.02104M instead of 0.02014M b. the student was past the endpoint of titration when he took the final buret reading.

3. how would the following errors affect the concentration of Cl- obtained in question 2b? give your reasoning in each case. a. the student read the molarity of AgNo3 as 0.02104M instead of 0.02014M b. the student was past the endpoint of titration when he took the final buret reading.

Fundamentals Of Analytical Chemistry
Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter6: Random Errors In Chemical Analysis
Section: Chapter Questions
Problem 6.15QAP
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3. how would the following errors affect the concentration of Cl- obtained in question 2b? give your reasoning in each case.

a. the student read the molarity of AgNo3 as 0.02104M instead of 0.02014M

b. the student was past the endpoint of titration when he took the final buret reading.

Name Vanessa orteqa. Section _CHM- 120 - 2HO10 Experiment 7 Advance Study Assignment: Analysis of an Unknown Chloride 1. A student performed this experiment and obtained the following concentration values: 0.02813 M, 0.02802 M, and 0.02788 M. a. What is the mean concentration? M b. What is the standard deviation of these results? M 2. A 10.00 mL diluted chloride sample required 13.89 mL of 0.02014 M AgNO, to reach the Fajans endpoint. a. How many moles of Cl¯ ion were present in the sample? (Use Eqs. 2 and 3.) : Moles of AgNO3 =0.02014 M × 0.01389L = 0.00028 moles moles of Agt= Moles 0.00028 moles ClF b. What was the concentration of chloride in the diluted solution? Ma= 0.02o1uMx13.89 mL 10.00ML 0.028 M = 0. 28 M 10.00 = 0.028 M 3. How would the following errors affect the concentration of Cl¯ obtained in Question 2b? Give your reasoning in each case. a. The student read the molarity of AgNO, as 0.02104 M instead of 0.02014 M. b. The student was past the endpoint of the titration when he took the final buret reading. Copyright 2016 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.
Transcribed Image Text:Name Vanessa orteqa. Section _CHM- 120 - 2HO10 Experiment 7 Advance Study Assignment: Analysis of an Unknown Chloride 1. A student performed this experiment and obtained the following concentration values: 0.02813 M, 0.02802 M, and 0.02788 M. a. What is the mean concentration? M b. What is the standard deviation of these results? M 2. A 10.00 mL diluted chloride sample required 13.89 mL of 0.02014 M AgNO, to reach the Fajans endpoint. a. How many moles of Cl¯ ion were present in the sample? (Use Eqs. 2 and 3.) : Moles of AgNO3 =0.02014 M × 0.01389L = 0.00028 moles moles of Agt= Moles 0.00028 moles ClF b. What was the concentration of chloride in the diluted solution? Ma= 0.02o1uMx13.89 mL 10.00ML 0.028 M = 0. 28 M 10.00 = 0.028 M 3. How would the following errors affect the concentration of Cl¯ obtained in Question 2b? Give your reasoning in each case. a. The student read the molarity of AgNO, as 0.02104 M instead of 0.02014 M. b. The student was past the endpoint of the titration when he took the final buret reading. Copyright 2016 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.
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