Use this list of half-reactions to answer the following two questions. MnO4-(aq)

Question

Use this list of half-reactions to answer the following two questions.

MnO4-(aq) + 8H+(aq) + 5e- ? Mn2+(aq) + 4H2O(l) +1.51 V
Cr2O72-(aq) + 6e- ? 2Cr3+(aq) + 7H2O(l) +1.33 V
Pt2+(aq) + 2e- ? Pt(s) +1.20 V
Cu2+(aq) + 2e- ? Cu(s) +0.34 V
Pb2+(aq) + 2e- ? Pb(s) -0.13 V
Al3+(aq) + 3e- ? Al(s) -1.66 V

41. The strongest reducing agent in the table is
a. Al(s).
b. Al3+(aq).
c. H+(aq).
d. MnO4-(aq).
e. Mn2+(aq).


42. Which of these combinations would result in reaction?
a. Al3+(aq) and Cr3+(aq)
b. Al3+(aq) and Cu(s)
c. Cr2O72-(aq) and MnO4-(aq)
d. Cu(s) and MnO4-(aq)
e. Pt(s) and Pb2+(aq)

Please Explain

Explanation / Answer

a) a. Al(s). b) b. Al3+(aq) and Cu(s)

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