Determine the oxidation state/number of Cl in ClO- in the reactant side and Cl- in the product side
The rules for oxidation states are as follows:
A. General Rules:
1. For an atom in its elemental form (Zn, Cl2, C(graphite), etc.) O.S. = 0
2. For an ion (Li+, Al3+, etc.) O.S. = charge
In the following reaction, the oxidation state (number) of chlorine changes from:
2 Cr(OH)4-(aq) + ClO-(aq) + 2 OH-(aq) → 2 CrO42-(aq) + 3 Cl-(aq) + 5 H2O(I)
A. -1 to -2
B. +3 to +6
C. +4 to +8
D. +1 to -1
E. -4 to +3
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