Question

IUPAC name of the compound is ${C_6}{H_5} - O - {C_2}{H_5}$:
A. ethoxybenzene
B. phenoxyethane
C. benzoxyethane
D. none of these

Answer 1

From the term IUPAC nomenclature, we know that it includes naming of new elements present in the periodic table. The IUPAC system has a set of logical rules devised and used to write a unique name for every distinct compound.To keep away from long and dull names in ordinary correspondence, the official suggestions for naming IUPAC are not generally continued by and by, with the exception of when a compound must be given an unambiguous and total definition. In some cases, IUPAC names might be less complex than more seasoned names, similarly as with ethanol, instead of ethyl liquor.

Complete step by step answer:
As we know that the IUPAC system is a systematic nomenclature in which the name of a compound is related to its molecular structure. According to this system, the name of an organic compound comprises a root word, a suffix and a prefix.
To find the IUPAC name of the compound we need to follow the following steps:
1.First, we need to identify the functional group.
2.Then, find the longest carbon chain which contains the functional group.
3.Then, count the number of the carbons present in the longest chain.
4.After that look for branched groups.
5.At last, name them and assign the number of the carbon atom to which the group is attached.
Therefore, ethoxybenzene is the IUPAC name of the given compound and ethyl phenyl ether is other name of molecule and we can draw the structure of ethoxy benzene as,

An ethoxy group $C{H_3}C{H_2}O -$ is found in the organic compound ethyl phenyl ether, ${C_6}{H_5}OC{H_2}C{H_3}$ which is also known as ethoxybenzene. When we relate to the alkoxy groups are aryloxy groups, which have an aryl group in a singular bond with oxygen such as the phenoxy group ${C_6}{H_5}O -$ .

Therefore, the option A is correct.

Note: The reason why we need IUPAC naming is that it helps to create an international standard for designating compounds to promote communication. Also, the purpose of the system is to give a unique and unambiguous name to each structure, and to compare each name with a unique and unambiguous structure.We have to remember that the arrangement of a deliberate name for a natural compound requires first determination and afterward naming of a parent structure. This essential name may then be altered by prefixes, infixes and on account of a parent hydride, additions which pass on definitely the auxiliary changes needed to create the compound being referred to from the parent structure.