A) Define "Oxidation $\mathrm{HNO}_{3}(a q)+\mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}(a q)+\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}(a q) \rightarrow$

Essay

A) Define "oxidation."
B) Identify the oxidizing and reducing agents in the following (unbalanced) equation. $\mathrm{HNO}_{3}(a q)+\mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}(a q)+\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}(a q) \rightarrow$
$\mathrm{KNO}_{3}(a q)+\mathrm{C}_{2} \mathrm{H}_{4} \mathrm{O}(a q)+\mathrm{H}_{2} \mathrm{O}(l)+\mathrm{Cr}\left(\mathrm{NO}_{3}\right)_{3}(a q)$