A sealed flask contains 0.40 g of water at 28 deg. celsius. The vapor pressure of water at this temperature is 28.36 mmHg
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To understand the behavior of water in a sealed flask, there are a few concepts we need to consider: vapor pressure and the relationship between temperature and vapor pressure.
1. Vapor Pressure: Vapor pressure is the pressure exerted by the vapor of a substance in equilibrium with its liquid or solid phase at a given temperature. In this case, the vapor pressure of water at 28 degrees Celsius is given as 28.36 mmHg.
2. Relationship between Temperature and Vapor Pressure: As the temperature increases, the vapor pressure of a substance also increases. This means that at higher temperatures, more molecules of the substance transition from the liquid phase to the vapor phase, increasing the vapor pressure.
Based on the given information, we know that:
- The flask is sealed, which means no water vapor can escape.
- The flask contains 0.40 g of water.
- The temperature inside the flask is 28 degrees Celsius.
- The vapor pressure of water at this temperature is 28.36 mmHg.
Given these details, we can conclude that the water inside the flask is in equilibrium with its vapor at a pressure of 28.36 mmHg. This means that the water continuously evaporates from the liquid phase and condenses back to the liquid phase at the same rate, resulting in a constant vapor pressure.
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