I need help in calculating the total mass of the unknown #2 sample of copper. The following chemical equations are in used: 2 Cu2+ + 4 I -> 2 Cus + I2 I2 + 2 S2O3-2 -> 2 I +S4O6-2 To standardize the Sodium Thiosulfate Average copper weight = 0.2536 g Average volume = 25.46 mL The Analysis of the Unknown #2 sample of copper Average mass of the unknown #2 sample of copper = 1.2474 g Average volume of sodium thiosulfate = 14.30 mL I came up with a molarity of 0.1567 for NaS2O3. Is it correct? I am coming up for the mass of the unknown #2 sample of copper: 0.1348 grams. Is that also correct?
I need help in calculating the total mass of the unknown #2 sample of copper. The following chemical equations are in used: 2 Cu2+ + 4 I -> 2 Cus + I2 I2 + 2 S2O3-2 -> 2 I +S4O6-2 To standardize the Sodium Thiosulfate Average copper weight = 0.2536 g Average volume = 25.46 mL The Analysis of the Unknown #2 sample of copper Average mass of the unknown #2 sample of copper = 1.2474 g Average volume of sodium thiosulfate = 14.30 mL I came up with a molarity of 0.1567 for NaS2O3. Is it correct? I am coming up for the mass of the unknown #2 sample of copper: 0.1348 grams. Is that also correct?
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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I need help in calculating the total mass of the unknown #2 sample of copper. The following chemical equations are in used:
2 Cu2+ + 4 I -> 2 Cus + I2
I2 + 2 S2O3-2 -> 2 I +S4O6-2
To standardize the Sodium Thiosulfate
Average copper weight = 0.2536 g
Average volume = 25.46 mL
The Analysis of the Unknown #2 sample of copper
Average mass of the unknown #2 sample of copper = 1.2474 g
Average volume of sodium thiosulfate = 14.30 mL
I came up with a molarity of 0.1567 for NaS2O3. Is it correct?
I am coming up for the mass of the unknown #2 sample of copper: 0.1348 grams. Is that also correct?
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