Why Does Glycerol Have a High Viscosity

Honey syrup motor oil and other liquids that do not flow freely like those shown in Figure 1 have higher viscosities. Why glycerol has high viscosity.

Viscosity As A Function Of Temperature For Choline Chcl Glycerol And Download Scientific Diagram

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. The higher extent of hydrogen bonding in glycerol thus makes glycerol more viscous than water. At room temperature glycerol or glycerin is in a liquid form. Viscosity in gases arises principally from the molecular diffusion that transports momentum between layers of flow.

The glycerol molecule has 3 OH groups and this allows for extensive hydrogen bonding between the many oxygen and hydrogen atoms and hence the molecules are always packed closely together which makes the substance viscous. Glycerol has three OH groups per molecule while water has only one OH group per molecule. The higher the viscosity of a liquid the thicker it is and the greater the resistance to flow.

For gases viscosity increases as temperature increases while in liquids the additional force between molecules become important hence viscosity tends to fall as temperature increases. Glycerin is widely used in cosmetics other than fragrances and water it is the most used product in the cosmetic industry. Which means to one molecule can atleast form 6 hydrogen bonds.

This means that the intermolecular forces are much greater because of these many hydrogen bonds. And that intermolecular force is likely hydrogen-bonding which is also repsonsible for the elevated boiling points of OH 2 N H 3 and H F much. Be notified when an answer is posted.

In laymans terms viscosity defines a fluids resistance to flow. Water gasoline and other liquids that flow freely have a low viscosity. Stronger the intermolecular force the more is the viscosity of the liquid.

Glycerol CH 2 OHCHOHCH 2 OH is viscous partly because of the length of the chain but also because of the extensive possibilities for hydrogen bonding between the molecules. The higher extent of hydrogen bonding in glycerol thus makes glycerol more viscous than water. The higher extent of hydrogen bonding in glycerol thus makes glycerol more viscous than water.

Hence both glycerol and water can form strong intermolecular hydrogen bonds but glycerol can form more hydrogen bonds per molecule than water. What is reason for high viscosity of glycerol. Waters high surface tension is due to the hydrogen bonding in water molecules.

Hence both glycerol and water can form strong intermolecular hydrogen bonds but glycerol can form more hydrogen bonds per molecule than water. Stronger the intermolecular force the more is the viscosity of the liquid. Is high viscosity thick or thin.

That is why glycerol has a higher viscosity than water. The video below shows several different long chained oils each progressively more viscous. Glycerol is has 3 OH groups.

Water has very strong intermolecular forces hence the low vapor pressure but its even lower compared to larger molecules with low vapor pressures. Viscosity depends on the amount of hydrogen bonding between molecules and presence of more OH group glycerol involved in intramolecular hydrogen bonding within the molecule thus glycerol is more viscous than ethylene glycol. According to my results and data books when I checked water has a higher surface tension than glycerol but glycerol is more viscous than water.

There is something called hydrogen bonding between molecules. Why is glycerol more viscous than ethylene glycol. Glycerol H 2COHCH OHCH 2OH is extremely viscous and is quite involatile bp 290C.

Everything I have read on the internet and heard from Chemistry teachers is that both viscosity and surface tension are directly proportional to the amount of hydrogen bonds a molecule has but. Alcohol also exhibit hydrogen bonding but glycerol contains three on per molecule and alcohol has only are OH group that can exhibit Hbonding. Vegetable oils are more viscous because they are esters of glycerol which holds three chains of fatty acids in a.

Glycerol is more viscous than ethane because of the expensive hydrogen bonding in glycerol. The force BETWEEN molecules is substantial. Clearly the degree of intermolecular force ie.

Answered 6 years ago. Does oil have a high viscosity. Hence both glycerol and water can form strong intermolecular hydrogen bonds but glycerol can form more hydrogen bonds per molecule than water.

Why does water have high surface tension but low viscosity. The answer is hydrogen bonding. Why does glycerol have a high viscosity.

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