Very pure silver nitrate standard reagent requires standardization with primary standard NaCl or KCl True False A water sample was analyzed for the total hardness through the reaction between the sample and EDTA. The data obtained from the experiment are presented below (MM CaCO3 = 100.0869 g/mol): Table 1. Standrdization of the EDTA solution mass of CaCO3 used 0.5467 g Initial burette reading 8.25 mL Final burette reading 16.65 mL Volume consumed 8.40 mL Table 2. Determination of Hardness of Water Volume of water sample 25.00 mL Initial burette reading 15.00 mL Final burette reading 24.00 mL Volume consumed 9.00 mL
Very pure silver nitrate standard reagent requires standardization with primary standard NaCl or KCl True False A water sample was analyzed for the total hardness through the reaction between the sample and EDTA. The data obtained from the experiment are presented below (MM CaCO3 = 100.0869 g/mol): Table 1. Standrdization of the EDTA solution mass of CaCO3 used 0.5467 g Initial burette reading 8.25 mL Final burette reading 16.65 mL Volume consumed 8.40 mL Table 2. Determination of Hardness of Water Volume of water sample 25.00 mL Initial burette reading 15.00 mL Final burette reading 24.00 mL Volume consumed 9.00 mL
Chapter17: Complexation And Precipitation Reactions And Titrations
Section: Chapter Questions
Problem 17.42QAP
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Question
Very pure silver nitrate standard reagent requires standardization with primary standard NaCl or KCl
True
False
A water sample was analyzed for the total hardness through the reaction between the sample and EDTA. The data obtained from the experiment are presented below (MM CaCO3 = 100.0869 g/mol):
Table 1. Standrdization of the EDTA solution
| mass of CaCO3 used | 0.5467 g |
| Initial burette reading | 8.25 mL |
| Final burette reading | 16.65 mL |
| Volume consumed | 8.40 mL |
Table 2. Determination of Hardness of Water
| Volume of water sample | 25.00 mL |
| Initial burette reading | 15.00 mL |
| Final burette reading | 24.00 mL |
| Volume consumed | 9.00 mL |
|
23,469 ppm |
||
|
22,456 ppm |
||
|
21,290 ppm |
||
|
23,990 ppm |
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