Questions:

Balance redox reactions in acidic or basic solution, including determination of oxidation numbers and identifying the substances being oxidized and reduced.

You may want to include the following topics:

Definition of oxidation and reduction

Determination of oxidation numbers

Balancing redox equations in acidic and basic solution

Redox reactions in organic chemistry

Assignment:

Balance the reaction equations below and describe the oxidation states of relevant elements:

Pb$($OH$)3-+$ OCl$-$ PbO$2+$ Cl$-($basic aqueous solution$)$

CH$3$CH$2$OH $+$ Cr$2$O$72-$ CH$3$COOH $+$ Cr$3+($acidic aqueous solution$)$