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Consider the RedOx titration of 20 mL of 0.5 M U4+with a 0.2 M MnO solution at 25 °C, using this information

Consider the RedOx titration of 20 mL of 0.5 M U4+with a 0.2 M MnO solution at 25 °C, using this information

Chemistry: Principles and Practice
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
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 18.103QE
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4. Consider the RedOx titration of 20 mL of 0.5 M U4+ with a 0.2 M MnO solution at 25 °C, using this information UO2+ (aq) + 2e + 4H+ (aq) = U4+ (aq) + 2H₂O(l) Eº= +0.334 V Mn0, (aq) + 8H+ (aq) + 5e¯ = Mn²+ (aq) + 4H₂0 (1) The system was maintained at a constant pH of 1 and 25 °C. Write the balanced overall equation. (i) (ii) (iii) (iv) (v) (vi) (vii) Eº = +1.510 V Show that the equivalence point potential is pH dependent. Calculate the equivalence point potential. What is the equivalence volume? What is the potential after adding 2 mL of the titrant? What is the potential after over-titrating by 1 mL? Using the points calculated from (iii) to (vi) sketch the titration curve for this reaction.
Transcribed Image Text:4. Consider the RedOx titration of 20 mL of 0.5 M U4+ with a 0.2 M MnO solution at 25 °C, using this information UO2+ (aq) + 2e + 4H+ (aq) = U4+ (aq) + 2H₂O(l) Eº= +0.334 V Mn0, (aq) + 8H+ (aq) + 5e¯ = Mn²+ (aq) + 4H₂0 (1) The system was maintained at a constant pH of 1 and 25 °C. Write the balanced overall equation. (i) (ii) (iii) (iv) (v) (vi) (vii) Eº = +1.510 V Show that the equivalence point potential is pH dependent. Calculate the equivalence point potential. What is the equivalence volume? What is the potential after adding 2 mL of the titrant? What is the potential after over-titrating by 1 mL? Using the points calculated from (iii) to (vi) sketch the titration curve for this reaction.
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