In 1-butyne, the carbon atoms involved in the triple bond are sp hybridized.

The longest carbon chain containing the double bond has 5 carbons, and the double bond starts at the first carbon, making it 1-pentene.

C3H4 is an alkyne, specifically propyne, as it contains a triple bond.

The reaction of propene with bromine results in the formation of 1,2-dibromopropane due to the addition of bromine across the double bond.

2-butyne is an alkyne with the formula C4H6, as it contains a triple bond.

2-pentene exhibits geometric isomerism due to the presence of a double bond, allowing for cis and trans forms.

C4H10 is an alkane, as it follows the formula CnH2n+2, where n=4.

1-butyne is a terminal alkyne because the triple bond is at the end of the carbon chain.

The longest chain has 4 carbons with a methyl group on the second carbon, making it 2-methylbutane.

The longest chain with the double bond is 5 carbons long, and the double bond starts at the second carbon, making it 2-pentene.

Alkenes can undergo hydrogenation, dehydration, and esterification, making all of the above reactions applicable.