Question

What is ostwald viscometer experiment?

Answer 1

Instrument estimating kinematic consistency of oil that has a predetermined temperature, e.g. 40 °C, by estimating time for the oil level to drop from Start Mark to Stop Mark. Under the Stop Mark there is a hairlike with an explicit opening measurement that makes the instrument appropriate for an explicit scope of viscosities.

The viscometer accompanies a table demonstrating the thickness for the time estimated.

Answer 2

Ostwald Viscometer Experiment is based on Poiseuille's Law which is about the rate of flow of liquid through a capacity tube with coefficient "η. The apparatus required for this experiment is :

• Ostwald Viscometer

• Beaker

• 20-25 mL Syringe

• Stand

• Liquids to be used

• Digital balance

The following is the formula for Ostwald Viscometer Experiment :

ηy =ηw × dy ty/dw tw

ηw: viscosity of water

ηy: viscosity of tested liquid

dw: density of water

dy: density of tested liquid

w: timing of runoff of water

y: timing of runoff of tested liquid