Question

Write down the general form of alkyne

Answer 1

Explanation:

Alkynes are hydrocarbons having a triple bond between the carbon atoms and their general formula is C

n

H

2n−2

.

For ethyne formula will be C

2

H

2

Option C is correct.

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Answer 2

Alkynes are hydrocarbons which contain carbon-carbon triple bonds.  Their general formula is CnH2n-2 for molecules with one triple bond (and no rings).

Alkynes undergo many of the same reactions as alkenes, but can react twice because of the presence of the two p-bonds in the triple bond.

Straight-chain and branched alkynes are named by using the stem that indicates the number of carbon atoms to which is added the suffix -yne.  A locator number is placed immediately in front of the prefix to indicate which carbon number the double bond starts on.  Thus, the word "1-butyne" indicates a chain of four carbons, with a triple bond between carbons 1 and 2; the word "2-butyne" indicates a chain of four carbons, with a triple bond between carbons 2 and 3.

Triple-bonded carbons are sp-hybridized, and have linear shapes, with the bonded atoms at angles of 180° to each other.  Because of this linear shape, geometric isomerism does not occur in alkynes.

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