To determine which element is reduced or oxidized, we must identify their possible changes in their oxidation states.
Remember the mnemonics:
The rules for oxidation states are as follows:
In the following unbalanced reaction, which atom is reduced?
H2O + Cl2 + SO2 → HCl + H2SO4
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Redox Reactions concept. You can view video lessons to learn Redox Reactions. Or if you need more Redox Reactions practice, you can also practice Redox Reactions practice problems.