The oxidation of 
25
mL


 of a solution containing 
Fe
2
+


 requires 
26
mL


 of 
0.0165
M
K
2
Cr
2
O
7


 in acidic solution.

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Balance the following equation (in acidic solution). Do not include the states of each species.
→
+
Cr
2
O
2
−
7
 
+
 
Fe
2
+
 
 
H
+
 
+
 
Cr
3
+
 
 
Fe
3
+