Answer :
The answer is (3) C5H8. The unsaturated hydrocarbon has double bonds between carbon atoms. And there is a rule of formula that if the carbon number *2 + 2 = hydrogen number, then it is saturated hydrocarbon.
Answer: The correct answer is Option 3.
Explanation:
Saturated hydrocarbons are defined as the hydrocarbons which have single covalent C-C bonds. They are known as alkanes. The general formula for these hydrocarbons is [tex]C_nH_{2n+2}[/tex]
Unsaturated hydrocarbons are defined as the hydrocarbons which have double or triple covalent C-C bonds. They are known as alkenes and alkynes respectively. The general formula for these hydrocarbons is [tex]C_nH_{2n}[/tex] and [tex]C_nH_{2n-2}[/tex]
For the given options:
Option 1: [tex]C_2H_6[/tex]
This is a saturated hydrocarbon where n = 2.
Option 2: [tex]C_3H_8[/tex]
This is a saturated hydrocarbon where n = 3.
Option 3: [tex]C_5H_8[/tex]
This is an unsaturated hydrocarbon where n = 5. It is an alkyne.
Option 4: [tex]C_6H_{14}[/tex]
This is a saturated hydrocarbon where n = 6.
Hence, the correct answer is Option 3.
