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The vapor pressure of 10 mL of ethanol at 20C is 5.85 kPa. What is the vapor pressure of 20 mL of ethanol at the same temperature?

Respuesta :

MissPhiladelphia
The vapor pressure of ethanol at 20°C is 5.85 kPa. It will still be the same value since vapor pressure is independent of volume. Vapor pressure or equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature. Hope this answers the question. Have a nice day.

Answer:

5.85 kPa

Explanation:

The vapor pressure of a liquid is not affected by the volume. This means it would have the same value it had at 10ml in 20ml also.

Vapor pressure is the pressure caused by the evaporation of liquids. Three common factors that influence vapor press are surface area, intermolecular forces and temperature. The vapor pressure of a molecule differs at different temperatures.  As the temperature increases, the vapor pressure increases.