Question

question 10 · 1 point
identify the name of the straight - chain alcohol with five carbons and ( - oh) groups on first and second carbon.
select the correct answer below:
○ 1,2 - pentanediol
○ 1,2 - pentanol
○ 1,2 - butanediol
○ 1,2 - butanol

Explanation:

Step1: Determine the base name

The compound has five carbon atoms. The base name for a five - carbon straight - chain alkane is "pentane". Since it is an alcohol (has - OH groups), the base name for the alcohol is "pentanol". But there are two - OH groups, so we use "pentanediol" (the "di - " prefix indicates two hydroxyl groups).

Step2: Locate the - OH groups

The - OH groups are on the first and second carbon atoms. So we add the locants "1,2 - " to the name.

So the name of the compound is 1,2 - pentanediol.

Answer:

1,2-pentanediol