Question

Oxidation involves :

• A. Addition of oxygen
• B. Removal of Hydrogen
• C. Removal of Hydrogen electrons
• D. Addition of any electronegative element

Answer 1

Answer: (A), (B), (C), (D)

Addition of any electronegative element

As the name suggest,

Oxidation $\to$ Addition of oxygen

In general,

Oxidation is the process of addition of oxygen or any electronnegative element or group OR removal of hydrogen or any eletropostive element or group. For example:

a.$2Mg\left(s\right)$ + $O_2\left(g\right)$ $\stackrel{\left[O\right]}{⟶}$ $2MgO\left(s\right)$ (Addition of oxygen)

b.2$FeC{l}_2$ (aq) + $C{l}_2$ (g) $\stackrel{\left[O\right]}{⟶}$ $2FeC{l}_3$(aq) (Addition of electronegative element)

c.$H_{2}S$ (g) + $C{l}_2$ (g) $\stackrel{\left[O\right]}{⟶}$ $2HCl\left(g\right)+S\left(s\right)$ (Removal of hydrogen)

d. $K_{2}Mn{O}_4\left(aq\right)$ + $O_3\left(g\right)$ + $H_{2}O\left(l\right)$ $\stackrel{\left[O\right]}{⟶}$ $KMn{O}_4\left(aq\right)$ + $KOH\left(aq\right)$ (Removal of electropostive element)