experiment: determination of mixed alkaliDraw a titration curve for the acid used in the experiment. Define all regions on the graph by writing related titration reactions.Here are the details from the experiment: Table 2. Analysis of UnknownVolume of HCIneeded toVolume of HCIneeded toreach%w/w%w/w%w/wTrialreachbromocresolNaOHNa2CO3NaHCO3phenolphthaleinend point (mL)green end point(mL)16.411.60.018860.216626.211.40.015530.214036.611.40.028660.2026Average %w/w of component0.021020.2111Standard Deviation0.006830.0075Relative Standard Deviation32.487353.5391O O Table 1. Standardization of HCI SolutionMolarity ofHCI (mol/L)Volume ofTrial Weight of Na2CO3 (g)HCI (mL)10.100519.30.0982619.518.90.10030.097060.09970.09954Average Molarity of HCIStandard Deviation0.098290.00124Relative Standard Deviation (from the meanin ppt)1.26295

According to the given data, the unknown sample is a mixture of NaOH and Na2CO3. The above mixture…

experiment: determination of mixed alkali Draw a titration curve for the acid used in the experiment. Define all regions on the graph by writing related titration reactions. Here are the details from the experiment:

experiment: determination of mixed alkali Draw a titration curve for the acid used in the experiment. Define all regions on the graph by writing related titration reactions. Here are the details from the experiment:

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.13QAP

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experiment: determination of mixed alkali

Draw a titration curve for the acid used in the experiment. Define all regions on the graph by writing related titration reactions.

Here are the details from the experiment:

Table 2. Analysis of Unknown
Volume of HCI
needed to
Volume of HCI
needed to
reach
%w/w
%w/w
%w/w
Trial
reach
bromocresol
NaOH
Na2CO3
NaHCO3
phenolphthalein
end point (mL)
green end point
(mL)
1
6.4
11.6
0.01886
0.2166
2
6.2
11.4
0.01553
0.2140
3
6.6
11.4
0.02866
0.2026
Average %w/w of component
0.02102
0.2111
Standard Deviation
0.00683
0.0075
Relative Standard Deviation
32.48735
3.5391
O O

Table 1. Standardization of HCI Solution
Molarity of
HCI (mol/L)
Volume of
Trial Weight of Na2CO3 (g)
HCI (mL)
1
0.1005
19.3
0.09826
19.5
18.9
0.1003
0.09706
0.0997
0.09954
Average Molarity of HCI
Standard Deviation
0.09829
0.00124
Relative Standard Deviation (from the mean
in ppt)
1.26295

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