A 0.1475-M solution of Ba(OH)2 was used to titrate the acetic acid (60.05 g/mol) in a dilute aqueous solution. The following results were obtained. (See attached image) (a) Calculate the mean w/v percentage of acetic acid in the sample. (b) Calculate the standard deviation for the results. (Take note if n-1 should be used) (c) Calculate the 90% confidence interval for the mean. (d) (d) At the 90% confidence level, could any of the results be discarded?

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Chapter3: Molecules, Moles, And Chemical Equations
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A 0.1475-M solution of Ba(OH)2 was used to titrate the acetic acid (60.05 g/mol) in a dilute aqueous solution. The following results were obtained. (See attached image)
(a) Calculate the mean w/v percentage of acetic acid in the sample.
(b) Calculate the standard deviation for the results. (Take note if n-1 should be used)
(c) Calculate the 90% confidence interval for the mean.
(d) (d) At the 90% confidence level, could any of the results be discarded?

Sample
Sample Volume, mL
Ba(OH), Volume, mL
1
50.00
43.17
49.50
42.68
25.00
21.47
50.00
43.33
2 34
Transcribed Image Text:Sample Sample Volume, mL Ba(OH), Volume, mL 1 50.00 43.17 49.50 42.68 25.00 21.47 50.00 43.33 2 34
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