When ethanol is heated at `170^(@)C` with conc. `H_(2)SO_(4)`, it forms an organic compound 'A' and water. The compound 'A' reacts with hydrogen in the presence of nickel to form 'B'.
iii. Name the products formed when 'B' undergoes combustion in presence of sufficient amount of oxygen. Write its chemical equation.

Explanation

When compound B (ethane) undergoes combustion in sufficient supply of oxygen, it forms carbon dioxide `(CO_(2))` and water `(H_(2)O)` along with the release of large amount of heat and light.
`underset("(B)")underset("Ethane")(2C_(2)H_(6))+underset("Oxygen")(7O_(2))rarr underset"dioxide)"underset("(Carbon")(4CO_(2))+underset("Water")(6H_(2)O+"Heat"+"light"`