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Consider the balanced reaction: 2Cr3+(aq)+3PbO2(s)+6H2O(l)→2CrO42-(aq)+3Pb2+(aq)+4H3O+ (aq) i. At 298.2 K, this reaction has an equilibrium constant K = 1.6 × 1013 . What is the standard molar free energy of reaction, ΔG° (in kJ/mol), for this reaction at 298.2 K? g. At a certain point the measured ∆G is –5 kJ/mol. Lowering the pH will cause free energy change of the reaction, ∆G, to..... choose (become less negative, stay the same, become more negative) h.The reaction is used to set up an electrochemical cell. What is true about the cell if the measured voltage is negative?... choose (Q < K,  Q = K,  Q > K, Need more info)

Consider the balanced reaction: 2Cr3+(aq)+3PbO2(s)+6H2O(l)→2CrO42-(aq)+3Pb2+(aq)+4H3O+ (aq) i. At 298.2 K, this reaction has an equilibrium constant K = 1.6 × 1013 . What is the standard molar free energy of reaction, ΔG° (in kJ/mol), for this reaction at 298.2 K? g. At a certain point the measured ∆G is –5 kJ/mol. Lowering the pH will cause free energy change of the reaction, ∆G, to..... choose (become less negative, stay the same, become more negative) h.The reaction is used to set up an electrochemical cell. What is true about the cell if the measured voltage is negative?... choose (Q < K,  Q = K,  Q > K, Need more info)

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter13: Electrochemistry
Section: Chapter Questions
Problem 13.101PAE
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Consider the balanced reaction:

2Cr3+(aq)+3PbO2(s)+6H2O(l)→2CrO42-(aq)+3Pb2+(aq)+4H3O+ (aq)

i. At 298.2 K, this reaction has an equilibrium constant K = 1.6 × 1013 . What is the standard molar free energy of reaction, ΔG° (in kJ/mol), for this reaction at 298.2 K?

g. At a certain point the measured ∆G is –5 kJ/mol. Lowering the pH will cause free energy change of the reaction, ∆G, to..... choose (become less negative, stay the same, become more negative)

h.The reaction is used to set up an electrochemical cell. What is true about the cell if the measured voltage is negative?... choose (Q < K,  Q = K,  Q > K, Need more info)

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