Question

The name of the following structure will include the following parent name: hexane, octane, butane, pentane, ethane?

1) hexaneoctanebutanepentaneethane
2) hexaneoctanebutanepentane
3) hexaneoctanebutane
4) hexaneoctane

Answer 1

The given string 'hexaneoctanebutanepentaneethane' isn't a valid IUPAC alkane name because it combines multiple different alkane chains. To correctly name an alkane, we must identify the longest carbon chain and apply the IUPAC rules of nomenclature.

Step-by-step explanation:

When naming an alkane, we must identify the longest continuous chain (LCC) of carbon atoms in the molecule. According to the International Union of Pure and Applied Chemistry (IUPAC) rules of nomenclature, we use specific prefixes to indicate the number of carbon atoms in the LCC: ethane (2 carbons), propane (3), butane (4), pentane (5), hexane (6), heptane (7), octane (8), etc. When presented with various chain lengths such as hexane, octane, butane, pentane, and ethane, one should first determine the longest chain among them which would serve as the parent name of the structure.

Using these basic rules, we can determine the parent name of a given alkane structure and provide the correct IUPAC name. As each alkane only corresponds to a structure with a specific number of carbon atoms in the longest chain, the string 'hexaneoctanebutanepentaneethane' isn't a valid IUPAC name because it amalgamates several different alkane names. Therefore, none of the answer choices provided would be valid according to IUPAC nomenclature for naming alkanes.