Question

What is the molecular formula of alkane?

• A. C\(_n\)H\(_{2n+2}\).
• B. C\(_3\)H\(_8\).
• C. C\(_n\)H\(_{2n}\).
• D. C\(_n\)H\(_{2n-2}\).

Hint:

Alkanes follow the general formula C\(_n\)H\(_{2n+2}\), and they are also known as saturated hydrocarbons.

Answer 1

The Correct Option is B

Step 1: Understanding alkane formula.
Alkanes are saturated hydrocarbons, meaning they contain only single bonds between carbon atoms. The general molecular formula for alkanes is C\(_n\)H\(_{2n+2}\), where \(n\) is the number of carbon atoms in the molecule. Step 2: Specific example - Propane.
For example, C\(_3\)H\(_8\) is propane, an alkane with 3 carbon atoms. This satisfies the general alkane formula C\(_n\)H\(_{2n+2}\), where \(n = 3\). Step 3: Conclusion. Thus, C\(_3\)H\(_8\) (propane) is an example of an alkane.