Provide the IUPAC name for the following compound: a. 2,4,5-Trimethyl-4-propylheptane b. 4-Isobutyl-4,5-dimethylheptane c. 4-sec-Butyl-2,4-dimethylheptane d. 3,4,6-Trimethyl-4-propylheptane e. 4-Isobutyl-3,4-dimethylheptane

Complete Question

The complete question is shown on the first uploaded image

The correct option is A

That is 2,4,5-Trimethyl-4-propylheptane

Explanation:

Looking at the structure the longest carbon chain is 7 as shown on the second uploaded image

Also from the diagram of the structure we can identify that is longest chain has 3 methyl group attachment and one propyl group  attachment  

 Now going through this longest chain the numbering of this attachment them the lowest number is the correct way so as we can see

  2,4,5-Trimethyl-4-propylheptane  gives the lowest numbering compared to 3,4,6-Trimethyl-4-propylheptane so the correct IUPAC names is 2,4,5-Trimethyl-4-propylheptane

explanation:

the largest database of organic compounds lists about 10 million substances, which include compounds originating from living organisms and those synthesized by chemists. the number of potential organic compounds has been estimated at 1060—an astronomically high number. the existence of so many organic molecules is a consequence of the ability of carbon atoms to form up to four strong bonds to other carbon atoms, resulting in chains and rings of many different sizes, shapes, and complexities. the simplest organic compounds contain only the elements carbon and hydrogen, and are called hydrocarbons. even though they are composed of only two types of atoms, there is a wide variety of hydrocarbons because they may consist of varying lengths of chains, branched chains, and rings of carbon atoms, or combinations of these structures. in addition, hydrocarbons may differ in the types of carbon-carbon bonds present in their molecules. many hydrocarbons are found in plants, animals, and their fossils; other hydrocarbons have been prepared in the laboratory. we use hydrocarbons every day, mainly as fuels, such as natural gas, acetylene, propane, butane, and the principal components of gasoline, diesel fuel, and heating oil. the familiar plastics polyethylene, polypropylene, and polystyrene are also hydrocarbons. we can distinguish several types of hydrocarbons by differences in the bonding between carbon atoms. this leads to differences in geometries and in the hybridization of the carbon orbitals.

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.