Determination of Viscosity of Ethyl Alcohol by Ostwalds Viscometer.
1. Define Viscosity.
Fluid Friction or resistance to flow.
2. Units of Viscosity.
The unit of viscosity is newton-second per square metre, which is usually expressed as pascal-second in SI units or millipoise
3. Intermolecular forces are directly proportional to viscosity.
4. Applications of Viscometer.
Comparison of viscosity.
5.What is the viscosity of water.
8.9 millipoise
6.Density of water and ethanol.
water : 1 gm/cc
Ethanol : 0.78 gm/cc
7.what is viscosity coefficient of a liquid.
Tangential force per unit area required to maintain unit velocity gradient between any two successive layers of the liquid.
8.Define density.
mass per unit volume
9.What is specific gravity.
Specific gravity is also called Relative density.
Has no units
10. Relation between Specific gravity and density.
Specific gravity is the density of a substance divided by the density of water. Since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density (but without any units).
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