Question

A hydrocarbon with the formula C_xH_y undergoes complete combustion as shown in the following equation:

\[\ce{2C_xH_y + 9O2 -> 6CO2 + 6H2O}\]

1. What are the values of ‘x’ and ‘y’?
2. Give the chemical (IUPAC) name of the hydrocarbon.
3. Draw its electron dot structure.
4. Name the alcohol which on heating with conc. H₂SO₄ will produce the above hydrocarbon C_xH_y.
5. Write a balanced chemical equation for the reaction of C_xH_y with hydrogen gas in presence of Nickel.

Answer 1

a. The values of ‘x’ and ‘y’ are x = 3, y = 6.

b. The IUPAC name of the hydrocarbon is propene.

c. The electron dot structure is as follows:

d. The name of the alcohol is propanol.

e. The balanced chemical equation is:

\[\ce{C3H6 + H2 ->[Ni] C3H8}\]

\[\ce{CH2 = CH - CH3 + H2 ->[Ni] CH3 - CH2 - CH3}\]