Question

24 multiple choice 2 points provide an acceptable iupac name for the alkane shown below. ch3—ch—ch2 ch2 ch(ch3)2 | ch2 ch3 3,6 - dimethylheptane 2 - ethyl,5 - methylhexane 2,5 - dimethylheptane 2 - methyl,5 - ethylhexane previous

Explanation:

Step1: Identify the longest carbon - chain

The longest continuous carbon - chain has 7 carbon atoms, so the parent name is heptane.

Step2: Locate and number the substituents

There are two methyl ($-CH_3$) groups. One is on the 2nd carbon and the other is on the 5th carbon when numbering the carbon - chain to give the substituents the lowest possible numbers. So the IUPAC name is 2,5 - dimethylheptane.

Answer:

C. 2,5 - dimethylheptane