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Which species acts as the anode when the reaction Zn(s) + Pb2+(aq) --> Zn2+(aq) + Pb(s) occurs in an electrochemical cell?
Al3+ + 3e- → Al
reduced, and the oxidation number changes from +1 to 0
-2 to -1
anode, which is positive
+1, +3, -1
O2
+5
Zn(s)
Which is the balanced half-reaction equation for the reduction of Al3+ to Al?
Al3+ + 3e- → Al
reduced, and the oxidation number changes from +1 to 0
-2 to -1
anode, which is positive
+1, +3, -1
O2
+5
Zn(s)
In the reaction: 2H2(g) + O2(g) --> 2H2O(g), the oxidizing agent is
Al3+ + 3e- → Al
reduced, and the oxidation number changes from +1 to 0
-2 to -1
anode, which is positive
+1, +3, -1
O2
+5
Zn(s)
What is the oxidation number of iodine in NaIO3?
Al3+ + 3e- → Al
reduced, and the oxidation number changes from +1 to 0
-2 to -1
anode, which is positive
+1, +3, -1
O2
+5
Zn(s)
The oxidation number of a reducing agent can change from
Al3+ + 3e- → Al
reduced, and the oxidation number changes from +1 to 0
-2 to -1
anode, which is positive
+1, +3, -1
O2
+5
Zn(s)
In an electrolytic cell, oxidation takes place at the:
Al3+ + 3e- → Al
reduced, and the oxidation number changes from +1 to 0
-2 to -1
anode, which is positive
+1, +3, -1
O2
+5
Zn(s)
In the reaction: Pb + 2Ag+ --> Pb2+ + 2Ag, the Ag+ is:
Al3+ + 3e- → Al
reduced, and the oxidation number changes from +1 to 0
-2 to -1
anode, which is positive
+1, +3, -1
O2
+5
Zn(s)
Write the oxidation state for each of the elements in cryolite, Na3AlF6:
Al3+ + 3e- → Al
reduced, and the oxidation number changes from +1 to 0
-2 to -1
anode, which is positive
+1, +3, -1
O2
+5
Zn(s)
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