How would you compare and contrast the structure and reactivity of alkanes and alkenes?

Answer 1

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...............A very useful idea that is used to rationalize the formulae of organic compounds is the #"degree of unsaturation"#. An alkane is fully #"saturated"#, and it contains the MAXIMUM ALLOWABLE number of #C-H# bonds.
Alkanes are #"FULLY saturated"# and have a general formula of #C_nH_(2n+2)#. Try this out for #"methane,"# #"ethane,"# .........#"pentane, etc."#
Each double bond, each olefinic bond or carbonyl group, OR a ring junction, corresponds to #1""^@# of unsaturation; i.e. 2 hydrogens LESS than the saturated formula. So according to the scheme, #"ethane"# has the saturated formula of #H_3C-CH_3#, but #"ethylene"#, #H_2C=CH_2#, and #"acetaldehyde"#, #H_3C-C(=O)H# has #1^@# of unsaturation. Halogen atoms count for one hydrogen; for nitrogen atoms, substract #NH# from the formula before assessing unsaturation; i.e. for #"ethylamine,"# #H_2NCH_2CH_3# #rarr C_2H_6#, i.e. #"no degrees of unsaturation"#.
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Answer 2

Alkanes have single bonds and a tetrahedral geometry, while alkenes have a double bond and a planar geometry. Alkanes undergo substitution reactions, while alkenes undergo addition reactions due to the presence of a π bond. Alkanes are generally less reactive than alkenes due to the absence of π bonds in their structure.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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