Question

How does the vapor pressure of water at 10*C compar with it's vapor pressure at 50*C???

Answer 1

have you got a graph? or are you looking for a qualitative answer?

Do you understand what causes vapor pressure?

Answer 2

Vapor pressure of water should increase as temperature increases. Eventually, when the temperature reaches 100 degrees Celsius, the vapor pressure above the water will be equal to (and eventually surpass) the atmospheric pressure (which acts as a "lid" to keep all the vapor pressure down above the water), which is when the water will start boiling.

Answer 3

Vapor pressure forms when the hydrogen "bonds" (not really "bonds" but instead "forces") between water molecules at the SURFACE of the liquid break due to thermal energy (related to the temperature of the environment), causing those water molecules at the surface to escape the liquid phase and enter the gaseous/vapor phase above the water.

Answer 4

The higher the temperature, the more thermal energy there is to break more hydrogen "bonds" between the water molecules at the surface of the liquid, leading to a higher vapor pressure

Answer 5

All of this phenomenon I'm describing is a physical change.