Question

The Society of Automotive Engineers has established an accepted numerical scale to measure the viscosity of motor oil. For example, SAE 40 motor oil has a higher viscosity than an SAE 10 oil.Rank the following hydrocarbons by their expected viscosity.Rank from most to least viscous. a. CH3CH2CH2CH2CH2CH3b. CH3CH2CH2CH2CH2CH2CH2CH3c. CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3

Answer 1

C

B

A

Step-by-step explanation:

The first hydrocarbon has a molecular formula of C6H14

Second has C8H18

The third has C10H22

It is expected that the higher the number of carbon in the chain of an alkane, the less fluid it is.

This explains why the first three members are gases , while others are liquids and solids subsequently.

Hence the third has the less fluidity and hence more viscosity since it has the longest chain, the second has lesser while the first has the least.

The answer is simply based on their chain length.