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Chemistry
Chemistry
Problem
The unbalanced equation below occurs in acidic solution.
Cr
2
O
7
2
−
+
I
−
→
Cr
3
+
+
IO
3
−
\text{Cr}_2\text{O}_7^{2-} + \text{I}^- \rightarrow \text{Cr}^{3+} + \text{IO}_3^-
Cr
2
O
7
2
−
+
I
−
→
Cr
3
+
+
IO
3
−
When the equation is completely balanced using the smallest whole-number coefficients, what is the coefficient of
H
2
O
\text{H}_2\text{O}
H
2
O
? a)
6
6
6
b)
4
4
4
c)
3
3
3
d)
7
7
7
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