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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?
-2 to -1
Zn(s)
The reaction occurs in an electrolytic cell and absorbs energy.
reduced, and the oxidation number changes from +1 to 0
+5
+1, +3, -1
O2
Al3+ + 3e- → Al
Which is the balanced half-reaction equation for the reduction of Al3+ to Al?
-2 to -1
Zn(s)
The reaction occurs in an electrolytic cell and absorbs energy.
reduced, and the oxidation number changes from +1 to 0
+5
+1, +3, -1
O2
Al3+ + 3e- → Al
What is the oxidation number of iodine in NaIO3?
-2 to -1
Zn(s)
The reaction occurs in an electrolytic cell and absorbs energy.
reduced, and the oxidation number changes from +1 to 0
+5
+1, +3, -1
O2
Al3+ + 3e- → Al
Which statement best describes the reaction represented by the equation:2NaCl + 2H2O + electricity --> Cl2 + H2 + 2NaOH
-2 to -1
Zn(s)
The reaction occurs in an electrolytic cell and absorbs energy.
reduced, and the oxidation number changes from +1 to 0
+5
+1, +3, -1
O2
Al3+ + 3e- → Al
Write the oxidation state for each of the elements in cryolite, Na3AlF6:
-2 to -1
Zn(s)
The reaction occurs in an electrolytic cell and absorbs energy.
reduced, and the oxidation number changes from +1 to 0
+5
+1, +3, -1
O2
Al3+ + 3e- → Al
In the reaction: 2H2(g) + O2(g) --> 2H2O(g), the oxidizing agent is
-2 to -1
Zn(s)
The reaction occurs in an electrolytic cell and absorbs energy.
reduced, and the oxidation number changes from +1 to 0
+5
+1, +3, -1
O2
Al3+ + 3e- → Al
The oxidation number of a reducing agent can change from
-2 to -1
Zn(s)
The reaction occurs in an electrolytic cell and absorbs energy.
reduced, and the oxidation number changes from +1 to 0
+5
+1, +3, -1
O2
Al3+ + 3e- → Al
In the reaction: Pb + 2Ag+ --> Pb2+ + 2Ag, the Ag+ is:
-2 to -1
Zn(s)
The reaction occurs in an electrolytic cell and absorbs energy.
reduced, and the oxidation number changes from +1 to 0
+5
+1, +3, -1
O2
Al3+ + 3e- → Al
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