Write the equation for the following :

(i) Calcium carbide and water

(ii) Ethene and water (steam)

(ii) Bromoethane and an aqueous solution of sodium hydroxide

(i) Calcium carbide and water: forms ethyne [acetylene]

$\underset{\text{calcium carbide}}{\text{CaC}$2} + \underset{\text{water}}{2\text{H}2\text{O}} \longrightarrow \underset{\text{ethyne [acetylene]}}{\text{C}2\text{H}2} + \text{Ca(OH)}_2

(ii) Ethene and water (steam): form Ethanol [ethyl alcohol]

$\underset{\text{Ethene}}{\text{C}$2\text{H}4} + \underset{\text{water[steam]}}{\text{H}2\text{O}} \xrightarrow[\text{acid}]{\text{H}^+} \underset{\text{ethanol}}{\text{C}2\text{H}_5\text{OH}}

(iii) Bromoethane and an aqueous solution of sodium hydroxide: form Ethanol [ethyl alcohol]

$\underset{\text{bromoethane}}{\text{C}$2\text{H}5\text{Br}} + \underset{\text{aq. sodium hydroxide}}{\text{NaOH}} \longrightarrow \underset{\text{Ethanol [ethyl alcohol]}}{\text{C}2\text{H}5\text{OH}} + \text{NaBr}