Which of the following hydrocarbons undergo addition reaction: #C_2H_6#, #C_3H_8#, #C_3H_6#, #C_2H_2# and #CH_4#?

Answer 1

#"C"_3"H"_6# and #"C"_2"H"_2# undergo addition reactions.

Addition reactions occur in unsaturated compounds with one or more carbon-carbon double, triple, or both types of bonds.

For open chain hydrocarbons, the general molecular formula of a saturated compound (alkane category) is #C_nH_(2n+2)#.
The general molecular formula of an aliphatic hydrocarbon with one double bond is #C_nH_(2n)#, and the general molecular formula of a hydrocarbon having one triple bond or two double bonds is #C_nH_(2n-2)#.

We can determine whether or not the compound is unsaturated by comparing it to these formulas.

Here, #C_3H_8=C_3H_(2xx3+2)#, #C_2H_6= C_2H_(2xx2+2)#, and #CH_4=CH_(2xx1+2)#.
All three follow the general formula of a saturated compound, i.e.#CnH_(2n+2)#, so they will not undergo addition reaction
#C_3H_6=C_3H_(2xx3)# follows the general formula #C_nH_(2n)#, and #C_2H_2=C_2H_(2xx2-2)# follows the general formula #C_nH_(2n-2)#, so they are unsaturated and undergo addition reactions.
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Answer 2

C₃H₆ and C₂H₂ undergo addition reactions.

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Answer 3

C₃H₆ and C₂H₂ undergo addition reactions.

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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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