
Interpretation:
The half reaction should be written for following situation:
Researchers led by Elisabeth bouwman, a chemist a leiden university in the Netherlands, discovered a copper-based catalyst that can convert CO2 from the air to oxalate ion(C2O42-). If CO2is oxidized or reduced in the reaction should be identified.
Concept Introduction:
An oxidant or an oxidizing agent is a substance that gains electron/s and get reduced during the
A reductant or a reducing agent is a substance that loses electron/s and get oxidized during the chemical reaction. It is also recognized as electron donor. Metals are reducing agents with respect to metals. If any element get reduce its oxidation number decreases or become more negative.

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Chapter 8 Solutions
EBK CHEMISTRY FOR CHANGING TIMES
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