Concept explainers
Interpretation:
The viscosity of water, hexane, and 100% glycerol to be plotted on semi-log coordinates. Also, the trend of this graph to follow the Arrhenius relationship is to be discussed.
Concept Introduction:
The value of the viscosity in liquids are much larger than that of the gases at a particular temperature. With an increase in the molecular weight of the liquid, its viscosity increases and with increase in the temperature of the liquid, its viscosity decreases. This change in the viscosity of the liquid due to the changes in its temperature occur because of the slight expansion of the liquid which results in the easy slide of the liquid molecules past each other.
The Arrhenius relationship for the viscosity and temperature is:
Here,
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