Question

Which of the following is most reactive?
1. Ethane
2. Ethyne
3. Methane
4. Ethene
5.

Answer 1

Correct Answer - Option 2 : Ethyne

CONCEPT:

Compound	Description	Chemical formula
Ethyne	it has a triple bond between two carbon atoms	C2H2 It is Alkyne and its general formula is CnH2n-2. .
Ethene	it has two carbon atoms that are double-bonded to each other	C2H4. It is Alkenes and its general formula is CnH2n
Ethane	It has its two carbon atoms have a single bond between them	C2H6. It is an Alkane and its general formula is CnH2n+2.

EXPLANATION:

• Ethyne consists of a triple bond that is most easier to be broken as compared to that of ethyne with a double bond and benzene single bonds.
• Therefore ethyne is most reactive among the given options.
• Hence option 2 is correct.
• Also, since Ethane is saturated, that's why it is the least reactive.
• Ethyne is least saturated, so Ethyne is most reactive.