I really need a detailed answer because this problem is really confusing me. Tha
ID: 833516 • Letter: I
Question
I really need a detailed answer because this problem is really confusing me. Thank you
Exhibit 19-1
Use this list of half-reactions to answer the following question(s).
MnO4-(aq) + 8H+(aq) + 5e- Mn2+(aq) + 4H2O(l)
+1.51 V
Cr2O72-(aq) + 6e- 2Cr3+(aq) + 7H2O(l)
+1.33 V
Cu2+(aq) + 2e- Cu(s)
+0.34 V
Pb2+(aq) + 2e- Pb(s)
-0.13 V
Fe2+(aq) + 2e- Fe(s)
-0.44 V
Al3+(aq) + 3e- Al(s)
-1.66 V
19 Refer to Exhibit 19-1. Which of these combinations would result in reaction?
A
Cu(s) and MnO4-(aq)
B
Al3+(aq) and Cr3+(aq)
C
Cr2O72-(aq) and MnO4-(aq)
D
Al3+(aq) and Cu(s)
E
Pb(s) and Fe2+(aq)
MnO4-(aq) + 8H+(aq) + 5e- Mn2+(aq) + 4H2O(l)
+1.51 V
Cr2O72-(aq) + 6e- 2Cr3+(aq) + 7H2O(l)
+1.33 V
Cu2+(aq) + 2e- Cu(s)
+0.34 V
Pb2+(aq) + 2e- Pb(s)
-0.13 V
Fe2+(aq) + 2e- Fe(s)
-0.44 V
Al3+(aq) + 3e- Al(s)
-1.66 V
Explanation / Answer
Al3+(aq) and Cu(s)