The following figure illustrates the establishment of an equilibrium between a l

Question

The following figure illustrates the establishment of an equilibrium between a liquid and its vapor at a given temperature. If the experiment were run at a higher temperature, the line representing the evaporation rate in the diagram would (Select all that apply.) have the same -intercept, but develop a positive slope remain horizontal, but move up remain horizontal, but move down have the same y-intercept, but develop a negative slope.

Use the References to access important values if needed The following figure illustrates the establishment of an equilibrium between a liquid and its vapor at a given temperature Rate condensation rate t1 12 13 Time If the experiment were run at a higher temperature, the line representing the evaporation rate in the diagram would (Select all that apply.) have the same y-intercept, but develop a positive slope O remain horizontal, but move up O remain horizontal, but move down have the same y-intercept, but develop a negative slope Submit Answer

Explanation / Answer

Evaporation is the conversion of a liquid to vapours below its boiling point. It is a surface phenomenon, means the liquid molecules on the surface possessing higher kinetic energy than the molecules in the bulk, will convert to vapour form. Rate of evaporation of a liquid is dependent on temperature. Higher the temperature, higher will be the average kinetic energy of the liquid molecules present on the surface (as well as bulk), easier it is for the surface molecules to get converted to vapour form. So at a higher temperature, the rate of evaporation must increase. Now when the experiment is run at a higher temperature, the temperature is maintained constant and not increased with time. So the line must remain horizontal and should not have a slope. So the line representing the rate of evaporation in the diagram must remain horizontal but move up which is the second option.

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