Question

What is the general formula of an alkane?

• A. \(C_nH_{2n}\)
• B. \(C_nH_{2n+2}\)
• C. \(C_nH_{2n-2}\)
• D. None of these

Hint:

Remember: Alkanes – single bonds (\(C_nH_{2n+2}\)), Alkenes – double bonds (\(C_nH_{2n}\)), Alkynes – triple bonds (\(C_nH_{2n-2}\)).

Answer 1

The Correct Option is B

Step 1: Understanding hydrocarbons.
Alkanes are saturated hydrocarbons with single bonds only.
Step 2: General formula.
For alkanes, the formula is:
\[ C_nH_{2n+2} \] Step 3: Examples.
Methane: \(CH_4\) (n=1), Ethane: \(C_2H_6\) (n=2).
Step 4: Conclusion.
Thus, correct general formula is \(C_nH_{2n+2}\).