Hi everyone here we have a question asking which of the following is the correct name for the al cane. So first we need to number our longest carbon chain. So we have one, two, 3, 4, 5 and six and 6 is hex. And it's an al caine meaning it only has single bonds. So it's going to end in a nine. So so far we have the base name hexane. Now we need to look at our substitue ints. So we have um ethel here at c. two and c. four, which means only one carbon. So C. Two and C. Four. We have metal. And those are our only to substitute parents. So if we put this together we will get to four and there's two methyl groups. So it's going to be dimethyl dime ethel fixing. And now let's look at our options. So we have a 35 dimethyl hexane. That is incorrect. We have B three ethyl five methyl plantain. That is incorrect. We have C two, methyl four ethyl plantain. That is incorrect. And lastly we have 24 dimethyl hexane. That is correct. And our final answer, thank you for watching. Bye.

Ch.21 - Organic Chemistry

Tro - Chemistry: A Molecular Approach 4th Edition

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Tro 4th Edition

Ch.21 - Organic Chemistry

Problem 41d

Chapter 21, Problem 41d

Name each alkane. d.

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Identify the longest continuous carbon chain in the alkane structure. This chain determines the base name of the alkane.

Number the carbon atoms in the longest chain starting from the end nearest a substituent group.

Identify and name the substituent groups attached to the main carbon chain. These are typically alkyl groups like methyl, ethyl, etc.

Assign a number to each substituent group based on its position on the main chain, using the numbering from step 2.

Combine the names and numbers into the full name of the alkane, listing substituents in alphabetical order and using prefixes like di-, tri- if there are multiple identical groups.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Alkanes

Alkanes are a class of hydrocarbons characterized by single bonds between carbon atoms. They follow the general formula CnH2n+2, where 'n' represents the number of carbon atoms. Alkanes are saturated compounds, meaning they contain the maximum number of hydrogen atoms per carbon atom, and they are typically non-polar and less reactive than other hydrocarbon classes.

Nomenclature of Alkanes

The nomenclature of alkanes follows specific rules set by the International Union of Pure and Applied Chemistry (IUPAC). The names are derived from the number of carbon atoms in the longest continuous chain, with prefixes such as 'meth-' for one carbon, 'eth-' for two, and so on. The suffix '-ane' indicates that the compound is an alkane, helping to distinguish it from other types of hydrocarbons.

Isomerism in Alkanes

Isomerism refers to the existence of compounds with the same molecular formula but different structural arrangements. In alkanes, this can lead to structural isomers, where the carbon skeleton varies, and positional isomers, where the location of branches or functional groups changes. Understanding isomerism is crucial for naming and identifying different alkanes, as it affects their physical and chemical properties.