Question

38 multiple choice 2 points provide an acceptable name for the alkane shown below: ch3 ch2ch3 ch3ch2chch2chch2chch2ch3 | ch2ch2ch3 3 - ethyl - 7 - methyl - 5 - propylnonane 3 - ethyl - 5 - methyl - 7 - propylnonane 3 - methyl - 7 - ethyl - 5 - propylnonane 7 - ethyl - 3 - methyl - 5 - propylnonane

Explanation:

Step1: Identify the longest carbon - chain

The longest continuous carbon - chain has 9 carbon atoms, so the parent name is nonane.

Step2: Number the carbon - chain

Number the chain to give the substituents the lowest possible numbers.

Step3: Name the substituents

There is an ethyl group at the 3 - position, a methyl group at the 7 - position, and a propyl group at the 5 - position.

Step4: Write the name in alphabetical order

Alphabetically, 'ethyl' comes before'methyl' and 'propyl', so the name is 3 - ethyl - 7 - methyl - 5 - propylnonane.

Answer:

3 - ethyl - 7 - methyl - 5 - propylnonane