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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

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
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
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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.
Transcribed Image Text: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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