Question

question 17 (1 point)
rubbing alcohol is a colourless alcohol that has a strong colour. it is the simplest
known form of secondary alcohol. its structure is:
oh
ch
h3c ch3
rubbing alcohol is called
a) propane-1,2,3-triol
b) propanal
c) propan-2-one
d) propanol
e) propan-2-ol

Explanation:

Step1: Analyze the functional group

The compound has an -OH (hydroxyl) group, so it is an alcohol (ends with -ol). Options b (Propanal, aldehyde: -CHO) and c (Propan - 2 - one, ketone: -CO-) can be eliminated.

Step2: Count carbon atoms and locate -OH position

The structure has 3 carbon atoms (prefix 'prop - '). The -OH is on the second carbon.

Step3: Check for multiple -OH groups

Option a (Propane - 1,2,3 - triol) has three -OH groups, which is not the case here. Option d (Propanol) is ambiguous about the -OH position.

Answer:

E. Propan - 2 - ol