Complex-Formation TitrationShow the solution 1. Calculate the volume of 0.0500M EDTA needed to titrate 26.37 ml of0.074IM Mg(NO)Molar Mass: Mg(NOa = 148.3Answer: 39.1 ml EDTA2. A solution contains 1.694 mg of Coso. per militer. Calculate theAnswer: 3.162 mL EDTAvolume of 0.08640M EDTA needed to titrate a 25.00-ml aliquot of thissolution.Molar Mass: Coso. = 155.0Answer: 0.08432 M Ag3. The silver ion in a 25.00-ml sample was converted to dicyanoargentate) lon by the addition of an excess solution containing N(CN):NiCN) + 2 Ag 2Ag(CN)r NThe liberated nickel ion was titrated with 43.77-ml of 0.024OBM EDTA.Calculate the molar concentration of the siver solution.Molar Masses: Ni- 58.69 Ag - 107.9Answer: 8.01 x 10 ppmCaco4. A 50.0-ml water sample was determined for hardness in terms ofCaco. required 40.0-ml of 0.0100M EDTA solution for titration.Calculate the total hardness in parts per million (ppm) CaCO.Molar Mass: Caco - 100.15. A sample of Ala[SOs weighing 7.52-g was dissolved in enough waterand diluted to 250.0-ml. 100.0-ml of the dilution was transferred toanother flask, 10.0-ml of 0.050M EDTA, 20-ml of butfer solution, 50-ml ofalcohol and 2.0-ml dithizone TS were odded. The resulting solutionrequired 8.7-ml of 0.03IM ZnSO4 to reach the endpoint. (Note: Each mlof 0.05OM EDTA is equivalent to 16.66-mg Ala[SOla -18H.0). Compute forthe percent purity of the somple.Molar Mass: Alb(5Ola-18H,0- 666.5Answer: 2.5% AlSO.

Answer: By using Eriochrome Black T indicator Mg2+ ion can be easily estimated by titrating them…

Answered: 1. Calculate the volume of 0.050OM EDTA…

1. Calculate the volume of 0.050OM EDTA needed to thrate 26.37 m of 0.074IM MaNO Molar Mass MglNO- 1483 Answer: 39.1 mi. EDTA

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Complex-Formation Titration

Show the solution

1. Calculate the volume of 0.0500M EDTA needed to titrate 26.37 ml of
0.074IM Mg(NO)
Molar Mass: Mg(NOa = 148.3
Answer: 39.1 ml EDTA
2. A solution contains 1.694 mg of Coso. per militer. Calculate the
Answer: 3.162 mL EDTA
volume of 0.08640M EDTA needed to titrate a 25.00-ml aliquot of this
solution.
Molar Mass: Coso. = 155.0
Answer: 0.08432 M Ag
3. The silver ion in a 25.00-ml sample was converted to dicyanoargentate
) lon by the addition of an excess solution containing N(CN):
NiCN) + 2 Ag 2Ag(CN)r N
The liberated nickel ion was titrated with 43.77-ml of 0.024OBM EDTA.
Calculate the molar concentration of the siver solution.
Molar Masses: Ni- 58.69 Ag - 107.9
Answer: 8.01 x 10 ppm
Caco
4. A 50.0-ml water sample was determined for hardness in terms of
Caco. required 40.0-ml of 0.0100M EDTA solution for titration.
Calculate the total hardness in parts per million (ppm) CaCO.
Molar Mass: Caco - 100.1
5. A sample of Ala[SOs weighing 7.52-g was dissolved in enough water
and diluted to 250.0-ml. 100.0-ml of the dilution was transferred to
another flask, 10.0-ml of 0.050M EDTA, 20-ml of butfer solution, 50-ml of
alcohol and 2.0-ml dithizone TS were odded. The resulting solution
required 8.7-ml of 0.03IM ZnSO4 to reach the endpoint. (Note: Each ml
of 0.05OM EDTA is equivalent to 16.66-mg Ala[SOla -18H.0). Compute for
the percent purity of the somple.
Molar Mass: Alb(5Ola-18H,0- 666.5
Answer: 2.5% AlSO.

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