In an ion, the sum of theoxidation states is equal to the overall ionic charge.

Question

In an ion, the sum of theoxidation states is equal to the overall ionic charge. Note thatthe sign of the oxidation states and the numberof atoms associated with each oxidation state must be considered.In OH-, for example, the oxygen atom has an oxidation state of -2and the hydrogen atom has an oxidation state of +1, for a total of(-2)+(+1)=-1 What is the oxidation state of eachindividual carbon atom in C2O42- In an ion, the sum of theoxidation states is equal to the overall ionic charge. Note thatthe sign of the oxidation states and the numberof atoms associated with each oxidation state must be considered.In OH-, for example, the oxygen atom has an oxidation state of -2and the hydrogen atom has an oxidation state of +1, for a total of(-2)+(+1)=-1 What is the oxidation state of eachindividual carbon atom in C2O42- What is the oxidation state of eachindividual carbon atom in C2O42-

Explanation / Answer

C2O42-   COO - l COO - O always has an oxidation states of -2.
So if there are 4 O atoms, with -2 each, it gives atotal of -8.
since the charge on the ion is -2, the total carbon is +6, andthere are 2, so each carbon is +3.

C= +3 O always has an oxidation states of -2.
So if there are 4 O atoms, with -2 each, it gives atotal of -8.
since the charge on the ion is -2, the total carbon is +6, andthere are 2, so each carbon is +3.

C= +3

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