The IUPAC name of C2H5 O C2H5 : A. Diethyl ether B. Ethoxy ethane C. Ethoxy propane D. Dimethyl ether
The Correct Answer and Explanation is:
The correct IUPAC name of C2H5O C2H5 is A. Diethyl ether.
Explanation:
The compound C2H5O C2H5 consists of two ethyl groups (C2H5) bonded to an oxygen atom. The structure can be written as CH3CH2OCH2CH3. This compound is an ether, which is characterized by an oxygen atom connected to two alkyl groups.
In IUPAC nomenclature, ethers are named by identifying the two alkyl groups attached to the oxygen atom and adding “ether” at the end. When both alkyl groups are identical, the prefix “di-” is used to indicate two of the same group. Hence, C2H5O C2H5 is named diethyl ether.
Now let’s analyze the other options:
- B. Ethoxy ethane: This name would suggest a molecule where an ethoxy group (C2H5O-) is attached to an ethane backbone. While this could theoretically be a valid structure, it does not follow the conventional naming for ethers, as the more straightforward approach is to use the “di-” prefix for identical groups.
- C. Ethoxy propane: This name suggests that an ethoxy group is attached to a propane molecule (C3H8). However, this does not apply to the given structure of C2H5O C2H5, as the correct molecule is made of two ethyl groups and an oxygen, not an ethoxy group attached to a propane.
- D. Dimethyl ether: This option refers to a compound with the formula CH3OCH3, where two methyl groups are attached to an oxygen atom, which is different from the structure in question.
Thus, the correct IUPAC name is diethyl ether (A).
