Complete the following chemical reactions and write the chemical name of the products obtained.
$(i)$ $CH_{2}=CH_{2} + H_{2}O \longrightarrow$
$(ii)$ $CH_{3}COOH + NaOH \longrightarrow$
$(iii)$ $CH_{3}CH_{2}OH \xrightarrow{H_{2}SO_{4}} $
$(iv)$ $HCOOH + Na \longrightarrow$
$(v)$ $C_{2}H_{5}OH \xrightarrow{\text{Alk. } KMnO_{4}} $

(N/A) $(i)$ $CH_{2}=CH_{2} + H_{2}O \longrightarrow C_{2}H_{5}OH$ (Ethanol)
$(ii)$ $CH_{3}COOH + NaOH \longrightarrow CH_{3}COONa$ (Sodium acetate) $+ H_{2}O$
$(iii)$ $CH_{3}CH_{2}OH \xrightarrow{H_{2}SO_{4}} CH_{2}=CH_{2}$ (Ethene) $+ H_{2}O$
$(iv)$ $HCOOH + Na \longrightarrow HCOONa$ (Sodium formate) $+ \frac{1}{2}H_{2}$
$(v)$ $C_{2}H_{5}OH \xrightarrow{\text{Alk. } KMnO_{4}} CH_{3}COOH$ (Ethanoic acid)