How do you know which compound has the highest viscosity?
Viscosity is governed by the strength of intermolecular forces and especially by the shapes of the molecules of a liquid. Liquids whose molecules are polar or can form hydrogen bonds are usually more viscous than similar nonpolar substances.
Why is glycerol viscosity so high?
Stronger the intermolecular force, the more is the viscosity of the liquid. Hence, both glycerol and water can form strong intermolecular hydrogen bonds, but glycerol can form more hydrogen bonds per molecule than water. The higher extent of hydrogen bonding in glycerol thus makes glycerol more viscous than water.
Does glycerin have a higher viscosity than water?
Answer to Question #137199 in General Chemistry for Kathlyn Glycerol is has 3 OH groups . 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. That is why, glycerol has a higher viscosity than water.
Why is glycerol viscosity higher than water?
Glycerol has three hydroxyl (OH) groups per molecule as compared to one in water due to which extent of hydrogen bonding is more in glycerol than water as a result of which glycerol is more viscous than water. Due to presence of hydrogen bonding in molecules of glycerol , it become more viscous than water.
Does pressure depend on viscosity?
Based exclusively on very general considerations concerning the relationship between viscosity and “free volume,” we show that, at moderate values of pressure, viscosity increases, as a rule, with increasing pressure, provided the liquid is in stable or metastable (undercooled) equilibrium states.
Why the viscosity in gas does not depend on pressure?
How does the viscosity of gases not change much on increasing the pressure? The gas molecules should have an increase in kinetic energy, contributing to more collisions and hence more viscosity.
Why does viscosity increase with temperature?
Since the momentum transfer is caused by free motion of gas molecules between collisions, increasing thermal agitation of the molecules results in a larger viscosity. Hence, gaseous viscosity increases with temperature.
Does water increase viscosity?
The higher the number of bonds, the higher the viscosity! One way to change the viscosity of a magma is too add water. Water has the effect of depolymerizing (6) magmas.