What are alkenes and alkynes?

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What are alkenes and alkynes?

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Answer 1 · 2016-08-08T10:37:54

Alkenes and alkynes are unsaturated organic molecules.

Explanation:

A saturated hydrocarbon has a formula of $C_{n} H_{2 n + 2}$ $C_nH_(2n+2)$ . Each $2 hydrogens$ $"2 hydrogens"$ less than this formula corresponds to a degree of unsaturation. A degree of unsaturation corresponds to a double bond (i.e. $C = X$ $C=X$ ) or a ring junction. Alkenes have $1^{\circ}$ $1^@$ degree of unsaturation with respect to the corresponding alkane; and alkynes have $2^{\circ}$ $2^@$ of unsaturation (because they have a triple bond).

And in summary, consider the general formulae:

$C_{n} H_{2 n + 2}$ $C_nH_(2n+2)$ $alkanes$ $"alkanes"$

$C_{n} H_{2 n}$ $C_nH_(2n)$ $alkenes$ $"alkenes"$

$C_{n} H_{n}$ $C_nH_(n)$ $alkynes$ $"alkynes"$ .

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What are alkenes and alkynes?

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