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Chemistry
Chemistry
Problem
See the following chemical reaction:
Cr
2
O
7
2
−
+
X
H
+
+
6
F
e
2
+
→
Y
Cr
3
+
+
6
F
e
3
+
+
Z
H
2
O
\text{Cr}_2\text{O}_7^{2-} + X\text{H}^+ + 6\text{F}_e^{2+} \rightarrow Y\text{Cr}^{3+} + 6\text{F}_e^{3+} + Z\text{H}_2\text{O}
Cr
2
O
7
2
−
+
X
H
+
+
6
F
e
2
+
→
Y
Cr
3
+
+
6
F
e
3
+
+
Z
H
2
O
The sum of X, Y and Z is ________.
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