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Worksheet 48 . Topic 11

Set A: Interpreting half-reaction equations Objective: To test your ability to determine information
from half-equations.

Below, a balanced half-reaction equation is given. Fill each blank with the appropriate “bold” term that
best describe what is occurring in the half-reaction equation.
Choose from the list of terms below.
Oxidation, reduction , oxidized, reduced, oxidizing agent,
reducing agent, lost electrons, gained electrons

1. Br2 + 2e- ---------- > 2Br- This half-equation represents ___________________
Br2 is ____________________
Br2 is the ____________________ agent
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Br2 had __________________ electrons

2. Zn -------------- > 2e + Zn This half-equation represents ___________________
2+
-
o
0
Zn is ______________________
0
Zn is the ___________________ agent
0
Zn had __________________ electrons

3. Au -------------- > 2e- + Au This half-equation represents ___________________
3+
+
+

Au is __________________

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+
Au is the __________________ agent
+
Au had __________________ electrons

4. Mn + e- ------------ > Mn This half-equation represents ___________________
4+
3+
4+
Mn is _________________
4+
Mn is the ________________ agent Need Help? Study Book Pg 267 S et 10
4+
Mn __________________ electrons

-
5. 2F ----------------- > F2 + 2e- This half-equation represents ___________________
-
F is __________________
-
F is the ___________________ agent
-
F had __________________ electrons

-
2-
6. 2S + 2e ------------ > S This half-equation represents ___________________
S is __________________
S is the ___________________ agent

S had __________________ electrons
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