Steam Condensation: How Much Steam is Converted to Water at Constant Pressure?

AI Thread Summary
The discussion focuses on the condensation of steam at constant pressure, specifically in a 1 m³ container filled with steam at 100°C and 1 barA pressure. When the temperature is lowered to 70°C, the steam pressure decreases from 101.32 kPa to 31.15 kPa. The calculation indicates that approximately 59.256% of the steam condenses into water based on the pressure change. This percentage is derived from the formula {1-(31.15/101.32)}%. The conclusion confirms that a significant portion of the steam is converted to water under these conditions.
pranj5
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What I want to be clarified in this thread is about condensation of steam at constant pressure. Suppose Suppose an enclosed volume of size 1 m³ and it's filled with steam at 100°C and 1 barA pressure. Now, the container is connected to a chamber filled with dry air in such a way that the pressure inside the chamber can't change. Now, the temperature has been lowered to 70°C. Question is, what % of steam will be condensed then.
At 100°C, the pressure of steam is 101.32 kPa while at 70°C it's 31.15 kPa. Does that mean that {1-(31.15/101.32)}% of steam i.e. approx 59.256% of steam has been converted to water?
 
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