Arrange the following compounds in order of increasing viscosity:
I) 1-propanol, CH₃CH₂CH₂OH;
II) 1,2-propanediol, CH₃CH(OH) CH₂OH;
III) 1,2,3-propanetriol, (glycerol) , HOCH₂CH(OH) CH₂OH.

Question

Arrange the following compounds in order of increasing viscosity: I) 1-propanol, CH₃CH₂CH₂OH; II) 1,2-propanediol, CH₃CH(OH)CH₂OH; III) 1,2,3-propanetriol, (glycerol), HOCH₂CH(OH)CH₂OH.

Quizplus · Accepted Answer

Viscosity increases with the number of hydroxyl (OH) groups due to increased hydrogen bonding. Therefore, 1-propanol (I) has the lowest viscosity, followed by 1,2-propanediol (II), and 1,2,3-propanetriol (III) has the highest viscosity.

Arrange the Following Compounds in Order of Increasing Viscosity