8. Would you expect an aqueous solution of manganese(VII) oxide to have a pH greater or less than 7.0? Justify your answer. 9. Assuming the schematics below represent galvanic cells as written, identify the half-cell reactions occurring in each. ** (B) Ni(s)| Ni*(aq) || Ag*(aq) | Ag(s) (A) Mg(s)| Mg*(aq) Cu (aq)| Cu(s) 2+ 2+ 2+ 10. Which member of each pair of metals is more likely to corrode (oxidize)? (A) Mg or Cu (B) Fe or Zn (C) Ag or Pb 11. If a 2.5 A current flows through a circuit for 40 s, how many coulombs of charge moved through the circuit? 12. Consider two processes: sublimation of I2(s) and melting of I2(s) at the same temperature (Note: the latter process can occur at the same temperature but somewhat higher pressure). (A) I2(S)I2(g) and (B) I(S)¬L2) Is AS positive or negative in these processes? In which of the processes will the magnitude of the entropy change be greater?
8. Would you expect an aqueous solution of manganese(VII) oxide to have a pH greater or less than 7.0? Justify your answer. 9. Assuming the schematics below represent galvanic cells as written, identify the half-cell reactions occurring in each. ** (B) Ni(s)| Ni*(aq) || Ag*(aq) | Ag(s) (A) Mg(s)| Mg*(aq) Cu (aq)| Cu(s) 2+ 2+ 2+ 10. Which member of each pair of metals is more likely to corrode (oxidize)? (A) Mg or Cu (B) Fe or Zn (C) Ag or Pb 11. If a 2.5 A current flows through a circuit for 40 s, how many coulombs of charge moved through the circuit? 12. Consider two processes: sublimation of I2(s) and melting of I2(s) at the same temperature (Note: the latter process can occur at the same temperature but somewhat higher pressure). (A) I2(S)I2(g) and (B) I(S)¬L2) Is AS positive or negative in these processes? In which of the processes will the magnitude of the entropy change be greater?
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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Question 12 a and b and explain
Transcribed Image Text:8. Would you expect an aqueous solution of manganese(VII) oxide to have a pH greater or less
than 7.0? Justify your answer.
9. Assuming the schematics below represent galvanic cells as written, identify the half-cell
reactions occurring in each.
**
(B) Ni(s)| Ni*(aq) || Ag*(aq) | Ag(s)
(A) Mg(s)| Mg*(aq) Cu
(aq)| Cu(s)
2+
2+
2+
10. Which member of each pair of metals is more likely to corrode (oxidize)?
(A) Mg or Cu
(B) Fe or Zn (C) Ag or Pb
11. If a 2.5 A current flows through a circuit for 40 s, how many coulombs of charge moved
through the circuit?
12. Consider two processes: sublimation of I2(s) and melting of I2(s) at the same temperature
(Note: the latter process can occur at the same temperature but somewhat higher pressure).
(A) I2(S)I2(g) and (B) I(S)¬L2)
Is AS positive or negative in these processes? In which of the processes will the magnitude of the
entropy change be greater?
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