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 +28H2Cr³+ + 14H₂O 9H₂C2O4 18CO2 + 18H+ + 18e 2Cr2O72- +9H₂C2O4 + 18e + 28H2Cr³+ + 14H₂O + 18CO2 + 18H+ + 18e- Cr₂O72- + H₂C2O4 → Cr³+ + CO₂ - Cr₂O72- + 14H → Cr³+ + 7H₂O Cr₂O72- + 14H + 9e → Cr³+ + 7H₂O 1 H₂C2O4 2CO2 + 2H+ H₂C2O4 → 2CO₂ + 2H+ + 2e - 2Cr2O72- + 18e +28H2Cr3+ + 14H₂O 9H₂C2O4 18CO2 + 18H + 18e 2Cr2O72 +9H₂C2O4 + 18e + 28H2Cr³+ 14H₂O + 18CO2 + 18H + 18e 1 - 1

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 +28H2Cr³+ + 14H₂O 9H₂C2O4 18CO2 + 18H+ + 18e 2Cr2O72- +9H₂C2O4 + 18e + 28H2Cr³+ + 14H₂O + 18CO2 + 18H+ + 18e- Cr₂O72- + H₂C2O4 → Cr³+ + CO₂ - Cr₂O72- + 14H → Cr³+ + 7H₂O Cr₂O72- + 14H + 9e → Cr³+ + 7H₂O 1 H₂C2O4 2CO2 + 2H+ H₂C2O4 → 2CO₂ + 2H+ + 2e - 2Cr2O72- + 18e +28H2Cr3+ + 14H₂O 9H₂C2O4 18CO2 + 18H + 18e 2Cr2O72 +9H₂C2O4 + 18e + 28H2Cr³+ 14H₂O + 18CO2 + 18H + 18e 1 - 1

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter3: Equation, The Mole, And Chemical Formulas

Section: Chapter Questions

Problem 3.41QE

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