1.Use standard reduction potentials to calculate the standard free energy change in kJ for the reaction: 2Cr3+(aq) + H2(g)2Cr2+(aq) + 2H+(aq) Answer: kJ K for this reaction would be less or greater than one.
1.Use standard reduction potentials to calculate the standard free energy change in kJ for the reaction: 2Cr3+(aq) + H2(g)2Cr2+(aq) + 2H+(aq) Answer: kJ K for this reaction would be less or greater than one.
General Chemistry - Standalone book (MindTap Course List)
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter19: Electrochemistry
Section: Chapter Questions
Problem 19.87QP: Calculate the cell potential of a cell operating with the following reaction at 25C, in which [MnO4]...
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Please atted all the four qs asap plea
1.Use standard reduction potentials to calculate the standard free energy change in kJ for the reaction:
2Cr3+(aq) + H2(g)2Cr2+(aq) + 2H+(aq)
Answer: kJ
K for this reaction would be less or greater than one.
2. When the Cu2+ concentration is 1.04 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.152V. What is the Cr3+ concentration?
3Cu2+(aq) + 2Cr(s)3Cu(s) + 2Cr3+(aq)
Answer: M
3Cu2+(aq) + 2Cr(s)3Cu(s) + 2Cr3+(aq)
Answer: M
Transcribed Image Text:Use standard reduction potentials to calculate the standard free energy change in kJ for the
reaction:
Cu²+ (aq) + Hg(1)→→→ Cu(s) + Hg²+ (aq)
Answer: 244.145
KJ
K for this reaction would be less
than one.
Transcribed Image Text:When the Cu²+ concentration is 1.04 M, the observed cell potential at 298K for an
electrochemical cell with the following reaction is 1.152V. What is the Cr³+ concentration?
3Cu²+ (aq) + 2Cr(s)—3Cu(s) + 2Cr³+ (aq)
Answer:
M
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