You find the following balanced reaction, it has not been completed but you notice a mistake, what mistake was made? Cr₂O72- + H₂C2O4 → Cr³+ + CO2 Cr₂O72- + 14H+ → Cr³+ + 7H₂O H₂C2O4 → 2CO2 + 2H+ Cr₂O72- + 14H+ + 9e → Cr3+ + 7H₂O H2C2O42CO2 + 2H+ + 2e- 2Cr₂O72- +18e + 28H+→ 2Cr³+ + 14H₂O 9H2C2O4 18CO2 + 18H+ + 18e- 2Cr2O72- +9H2₂C2O4 + 18e + 28H+ → 2Cr³+ + 14H₂O + 18CO2 + 18H+ + 18e- Cr₂O72- + H₂C2O4 Cr³+ + CO₂
You find the following balanced reaction, it has not been completed but you notice a mistake, what mistake was made? Cr₂O72- + H₂C2O4 → Cr³+ + CO2 Cr₂O72- + 14H+ → Cr³+ + 7H₂O H₂C2O4 → 2CO2 + 2H+ Cr₂O72- + 14H+ + 9e → Cr3+ + 7H₂O H2C2O42CO2 + 2H+ + 2e- 2Cr₂O72- +18e + 28H+→ 2Cr³+ + 14H₂O 9H2C2O4 18CO2 + 18H+ + 18e- 2Cr2O72- +9H2₂C2O4 + 18e + 28H+ → 2Cr³+ + 14H₂O + 18CO2 + 18H+ + 18e- Cr₂O72- + H₂C2O4 Cr³+ + CO₂
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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Transcribed Image Text:You find the following balanced reaction, it has not been completed but you notice a mistake, what mistake was made?
Cr₂O72- + H₂C2O4 → Cr3+ + CO₂
Cr₂O72- + 14H+ → Cr³+ + 7H₂O
H₂C2O4 → 2CO2 + 2H+
Cr₂O72- + 14H+ +9e-→ Cr3+ + 7H₂O
H₂C2O4 → 2CO2 + 2H+ + 2e-
2Cr₂O72- + 18e + 28H+→ 2Cr³+ + 14H₂0
9H₂C₂O4 18CO2 + 18H+ + 18e
2Cr2O72- +9H2C2O4 + 18e + 28H+→ 2Cr³+ + 14H₂O + 18CO2 + 18H+ + 18e-
Cr₂O72- + H₂C2O4 → Cr3+ + CO₂
Cr₂O72- + 14H* → Cr³+ + 7H₂O
Cr₂O72- + 14H+ +9e → Cr³+ + 7H₂O
2Cr2O72- + 18e +28H → 2Cr3+ + 14H₂O
2Cr2O72- +9H2C2O4 + 18e + 28H+
-
H₂C₂O4 → 2002 + 2H+
H2C2O4 2CO2 + 2H+ + 2e-
9H2C2O4 18CO2 + 18H + 18e-
-
2Cr³+ + 14H2O + 18CO2 + 18H+ + 18e-

Transcribed Image Text:Ⓒa. Electrons were not calculated correctly
bo or H-was not balanced correctly
Oc. Multiplication was not done correctly
O d. Balancing was not done correctly
Oe. Nothing is wrong
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