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Chapter 24: Problem 27

Write the condensed structural formulas for two alkenes and one alkyne that all have the molecular formula \(\mathrm{C}_{6} \mathrm{H}_{10}\).

Short Answer

Expert verified
The condensed structural formulas for two alkenes and one alkyne with the molecular formula \(\mathrm{C}_{6} \mathrm{H}_{10}\) are: 1. 1-Hexene: \(CH_2=CH(CH_2)_4H\) 2. 2-Hexene: \(CH_3CH=CH(CH_2)_3H\) 3. 1-Hexyne: \(CH\equiv C(CH_2)_4H\)

Step by step solution

01

Determine general formulas for alkenes and alkynes

Alkenes are hydrocarbons containing a carbon-carbon double bond, and their general formula is \(\mathrm{C}_n\mathrm{H}_{2n}\). Alkynes, on the other hand, are hydrocarbons containing a carbon-carbon triple bond, and their general formula is \(\mathrm{C}_n\mathrm{H}_{2n-2}\).
02

Find two alkenes

According to the general formula for alkenes, when \(n=6\), the molecular formula should be \(\mathrm{C}_6\mathrm{H}_{12}\). Since we are looking for alkenes with the molecular formula \(\mathrm{C}_{6} \mathrm{H}_{10}\), we need to identify any structural isomers with a double bond and remove two hydrogen atoms. Two such structural isomers are: 1. 1-Hexene: The double bond is between the first and second carbons. Condensed structural formula: \(CH_2=CH(CH_2)_4H\) 2. 2-Hexene: The double bond is between the second and third carbons. Condensed structural formula: \(CH_3CH=CH(CH_2)_3H\) Thus, we identified two alkenes with the molecular formula \(\mathrm{C}_{6} \mathrm{H}_{10}\).
03

Find one alkyne

According to the general formula for alkynes, when \(n=6\), we should have a molecular formula of \(\mathrm{C}_6\mathrm{H}_{10}\). Thus, we need to find a structural isomer with a triple bond. One such structural isomer is: 3. 1-Hexyne: The triple bond is between the first and second carbons. Condensed structural formula: \(CH\equiv C(CH_2)_4H\) Therefore, we have identified one alkyne with the molecular formula \(\mathrm{C}_{6} \mathrm{H}_{10}\). Combined, we have found two alkenes (1-Hexene and 2-Hexene) and one alkyne (1-Hexyne) with the given molecular formula \(\mathrm{C}_{6} \mathrm{H}_{10}\).

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Most popular questions from this chapter

Draw the condensed structure of the compounds formed by condensation reactions between (a) benzoic acid and ethanol, (b) ethanoic acid and methylamine, (c) acetic acid and phenol. Name the compound in each case.

Name or write the condensed structural formula for the following compounds: (a) cis-2-pentene (b) 1,6-dichloro-3-hexyne (c) \(\mathrm{BrC} \equiv \mathrm{CBr}\) (d) 1,3 -Benzenediol (e) $\mathrm{CH}_{2}=\mathrm{CH}_{2} \mathrm{CH}\left(\mathrm{CH}_{3}\right) \mathrm{CH}=\mathrm{CH}_{2}$

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