Ch3-ch2-cho IUPAC NAME:

The IUPAC name of Ch3-ch2-cho is 2-methylpropanal.

Explanation:

The IUPAC nomenclature system is a set of rules and conventions used to give unique names to organic compounds. It provides a systematic way to describe the structure and composition of molecules. Following the IUPAC rules, we can determine the correct name for Ch3-ch2-cho.

Breaking down the IUPAC name:

1. Prefix: The prefix "2-methyl" indicates that there is a methyl group (CH3-) attached to the second carbon atom in the main chain.

2. Parent chain: The parent chain is propanal, which consists of three carbon atoms (propane) and an aldehyde functional group (-al). The aldehyde group is indicated by the suffix "-al."

3. Position of the functional group: The aldehyde group is located at the second carbon atom (counting from the left) in the parent chain. This is denoted by the number "2" in the prefix.

4. Substituents: The methyl group (CH3-) is a substituent attached to the second carbon atom of the parent chain.

Putting it all together:

By combining these components, we can determine the IUPAC name of Ch3-ch2-cho as 2-methylpropanal. This name accurately describes the structure and composition of the compound, following the rules of IUPAC nomenclature.

Summary:

In summary, the IUPAC name of Ch3-ch2-cho is 2-methylpropanal. The name reflects the presence of a methyl group attached to the second carbon atom of a propanal molecule. Following the IUPAC rules ensures a systematic and unambiguous way of naming organic compounds.

IUPAC name → Propanal