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Chapter 22: Problem 2

Classify each of the following hydrocarbons as alkanes, alkenes, or alkynes. (a) \(\mathrm{C}_{12} \mathrm{H}_{24}\) (b) \(\mathrm{C}_{7} \mathrm{H}_{12}\) (c) \(\mathrm{C}_{13} \mathrm{H}_{28}\)

Short Answer

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Question: Classify the following hydrocarbons as alkanes, alkenes, or alkynes: (a) \(\mathrm{C}_{12} \mathrm{H}_{24}\), (b) \(\mathrm{C}_{7} \mathrm{H}_{12}\), and (c) \(\mathrm{C}_{13} \mathrm{H}_{28}\). Answer: (a) \(\mathrm{C}_{12} \mathrm{H}_{24}\) is an alkene, (b) \(\mathrm{C}_{7} \mathrm{H}_{12}\) is an alkyne, and (c) \(\mathrm{C}_{13} \mathrm{H}_{28}\) is an alkane.

Step by step solution

01

Classifying Hydrocarbon (a) \(\mathrm{C}_{12} \mathrm{H}_{24}\)

First, we'll compare the given hydrocarbon to the general formulas: 1. Alkane: \(\mathrm{C}_{12}\mathrm{H}_{2(12)+2}=\mathrm{C}_{12}\mathrm{H}_{26}\) 2. Alkene: \(\mathrm{C}_{12}\mathrm{H}_{2(12)}=\mathrm{C}_{12}\mathrm{H}_{24}\) 3. Alkyne: \(\mathrm{C}_{12}\mathrm{H}_{2(12)-2}=\mathrm{C}_{12}\mathrm{H}_{22}\) Since the given hydrocarbon matches the alkene formula, we can classify \(\mathrm{C}_{12} \mathrm{H}_{24}\) as an alkene.
02

Classifying Hydrocarbon (b) \(\mathrm{C}_{7} \mathrm{H}_{12}\)

Next, we'll compare this hydrocarbon to the general formulas: 1. Alkane: \(\mathrm{C}_{7}\mathrm{H}_{2(7)+2}=\mathrm{C}_{7}\mathrm{H}_{16}\) 2. Alkene: \(\mathrm{C}_{7}\mathrm{H}_{2(7)}=\mathrm{C}_{7}\mathrm{H}_{14}\) 3. Alkyne: \(\mathrm{C}_{7}\mathrm{H}_{2(7)-2}=\mathrm{C}_{7}\mathrm{H}_{12}\) Since the given hydrocarbon matches the alkyne formula, we can classify \(\mathrm{C}_{7} \mathrm{H}_{12}\) as an alkyne.
03

Classifying Hydrocarbon (c) \(\mathrm{C}_{13} \mathrm{H}_{28}\)

Finally, we'll compare this hydrocarbon to the general formulas: 1. Alkane: \(\mathrm{C}_{13}\mathrm{H}_{2(13)+2}=\mathrm{C}_{13}\mathrm{H}_{28}\) 2. Alkene: \(\mathrm{C}_{13}\mathrm{H}_{2(13)}=\mathrm{C}_{13}\mathrm{H}_{26}\) 3. Alkyne: \(\mathrm{C}_{13}\mathrm{H}_{2(13)-2}=\mathrm{C}_{13}\mathrm{H}_{24}\) Since the given hydrocarbon matches the alkane formula, we can classify \(\mathrm{C}_{13} \mathrm{H}_{28}\) as an alkane.

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Most popular questions from this chapter

The general formula of an alkane is \(\mathrm{C}_{n} \mathrm{H}_{2 n+2}\). What is the general formula of an (a) alkene? (b) alkyne? (c) alcohol derived from an alkane?

There are three compounds with the formula \(\mathrm{C}_{6} \mathrm{H}_{3} \mathrm{Cl}_{3}\) in which three of the hydrogen atoms of the benzene molecule have been replaced by chlorine atoms. Draw structures for these compounds.

Write structural formulas for the following alkanes. (a) \(2,2,4\) -trimethylpentane (b) 2,2 -dimethylpropane (c) 4-isopropyloctane (d) \(2,3,4\) -trimethylheptane

R For which of the following is geometric isomerism possible? (a) \(\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C}=\mathrm{CCl}_{2}\) (b) \(\mathrm{CH}_{3} \mathrm{ClC}=\mathrm{CCH}_{3} \mathrm{Cl}\) (c) \(\mathrm{CH}_{3} \mathrm{BrC}=\mathrm{CCH}_{3} \mathrm{Cl}\)

Classify the following reactions as addition, substitution, elimination, or condensation. (a) \(\mathrm{C}_{2} \mathrm{H}_{2}(g)+\mathrm{HBr}(g) \rightarrow \mathrm{C}_{2} \mathrm{H}_{3} \mathrm{Br}(l)\) (b) \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{OH}(s)+\mathrm{HNO}_{3}(l) \rightarrow \mathrm{C}_{6} \mathrm{H}_{4}(\mathrm{OH})\left(\mathrm{NO}_{2}\right)(s)+\mathrm{H}_{2} \mathrm{O}(l)\) (c) \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(a q)+\mathrm{HCOOH}(a q) \rightarrow\)
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