Chapter 22, Problem 2TE

To determine

The higher boiling point among kerosene and gasoline.

Answer to Problem 2TE

Kerosene has higher boiling point than gasoline which makes kerosene safer fuel. Kerosene boiling point is $\text{38}{}^{\text{o}}\text{C}$ while that of gasoline is $\text{-40}{}^{\text{o}}\text{C}$

Explanation of Solution

Kerosene and gasoline are the components of crude oil the crude oil is taken out from the ground as a black liquid called petroleum. Crude oil contains different type of fuel. All fuel contains aliphatic or aromatic hydrocarbons. Different fuel has different molecular mases i.e. they have different hydrocarbon chain. Differenthydrocarbon chain length has different boiling points, longer the chain higher will be the boiling points.

Kerosene have hydrocarbon in ${\text{C}}_{\text{12}}\text{-}{\text{C}}_{\text{15}}$ range while gasoline contains hydrocarbon in the range of ${\text{C}}_{\text{3}}{\text{-C}}_{\text{12}}$. So due to less carbon chain gasoline have lower boiling point than kerosene.

Conclusion:

Therefore, different structural isomers have different physical and chemical properties as they have different structures.