Details Trial 1 A. Preparation of Ca²+ Standard Solution Mass (g) CaCO3 Amount (mmoles) Ca = Amount (mmoles) CaCO3 Volume (mL) of Ca Standard Solution Molarity of Ca Standard Solution B. Determination of the Concentration of EDTA Solution (Molarity) Balanced Chemical Equation Molarity of Ca Standard Solution Volume (mL) of Ca Standard Solution Titrated Amount (mmoles) Ca Amount (mmoles) EDTA reacted Volume (mL) of the EDTA Solution delivered 21.70 Molarity of EDTA solution Average Molarity EDTA solution Deviation Standard Deviation Coefficient of Variation (%RSD) C. Other Expressions of Concentration of the EDTA Solution Average Molarity of EDTA Standard Solution Trial 2 0.2473 21.60 Trial 3 21.40

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
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Chapter17: Complexation And Precipitation Reactions And Titrations
Section: Chapter Questions
Problem 17.35QAP
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Table 2. Determination of Ca in Drugs
Balanced Chemical Equation
Details
A. Preparation of the Dilute Tablet Solution
Number of Tablets Dissolved
Volume (mL) of Dilute Tablet Solution Prepared
B. Titrimetric Analysis of the Dilute Tablet Solution (DTS)
Volume (mL) of DTS Titrated
Average Molarity of EDTA Solution
Ca titer (mg Ca/mL of EDTA solution)
Volume (mL) of the EDTA Solution Delivered
Trial 1
25.00
9.60
Trial 2
25.00
9.60
Trial 3
25.00
9.40
Transcribed Image Text:Table 2. Determination of Ca in Drugs Balanced Chemical Equation Details A. Preparation of the Dilute Tablet Solution Number of Tablets Dissolved Volume (mL) of Dilute Tablet Solution Prepared B. Titrimetric Analysis of the Dilute Tablet Solution (DTS) Volume (mL) of DTS Titrated Average Molarity of EDTA Solution Ca titer (mg Ca/mL of EDTA solution) Volume (mL) of the EDTA Solution Delivered Trial 1 25.00 9.60 Trial 2 25.00 9.60 Trial 3 25.00 9.40
Table 1. Standardization of 0.01 M EDTA Against the Primary Standard Calcium Carbonate
Balanced Chemical Equation:
Details
Trial 1
Trial 2
Trial 3
A. Preparation of Ca²+ Standard Solution
Mass (g) CaCO3
0.2473
Amount (mmoles) Ca = Amount (mmoles) CaCO3
Volume (mL) of Ca Standard Solution
Molarity of Ca Standard Solution
B. Determination of the Concentration of EDTA Solution (Molarity)
Balanced Chemical Equation
Molarity of Ca Standard Solution
Volume (mL) of Ca Standard Solution Titrated
Amount (mmoles) Ca
Amount (mmoles) EDTA reacted
Volume (mL) of the EDTA Solution delivered
21.70
Molarity of EDTA solution
Average Molarity EDTA solution
Deviation
Standard Deviation
Coefficient of Variation (%RSD)
C. Other Expressions of Concentration of the EDTA Solution
Average Molarity of EDTA Standard Solution
Ca titer (mg Ca/mL of EDTA solution)
21.60
21.40
Transcribed Image Text:Table 1. Standardization of 0.01 M EDTA Against the Primary Standard Calcium Carbonate Balanced Chemical Equation: Details Trial 1 Trial 2 Trial 3 A. Preparation of Ca²+ Standard Solution Mass (g) CaCO3 0.2473 Amount (mmoles) Ca = Amount (mmoles) CaCO3 Volume (mL) of Ca Standard Solution Molarity of Ca Standard Solution B. Determination of the Concentration of EDTA Solution (Molarity) Balanced Chemical Equation Molarity of Ca Standard Solution Volume (mL) of Ca Standard Solution Titrated Amount (mmoles) Ca Amount (mmoles) EDTA reacted Volume (mL) of the EDTA Solution delivered 21.70 Molarity of EDTA solution Average Molarity EDTA solution Deviation Standard Deviation Coefficient of Variation (%RSD) C. Other Expressions of Concentration of the EDTA Solution Average Molarity of EDTA Standard Solution Ca titer (mg Ca/mL of EDTA solution) 21.60 21.40
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