The vapor pressure of styrene is 100 mmHg at 82 degrees C and 200 mmHg at 100 degrees C. A gas that consists of 10 mole% of styrene and 90 mole% of non-condensable is contained in a tank at 100ºC and 1000 mmHg. Calculate the dew point of the gas, relative saturation, molal saturation, and percentage saturation.

 

1. What is the total pressure of the gas mixture in mmHg?
2. What is the partial pressure of styrene in mmHg?
3. What is the dew point temperature of styrene in oC?
4. What is the relative saturation of the gas?
5. What is the molal saturation of the gas?

6. What is the percent saturation of styrene in the gas?
 

Q2. Nine-hundred forty-seven cubic feet of wet air at 70oF and 29.2 in Hg are dehydrated. If 0.94 pounds of water vapor are removed, what was the relative humidity of the wet air?

 

7. Analyzing the problem, what will be the first thing that you should solve for to get relative humidity?
 

8. What is the partial pressure of water?

9. Where can you get the vapor pressure of water?

10. What is the relative humidity of the gas mixture?
 
 

Analyzing the problem, what will be the first thing that you should solve for to get relative humidity? Total pressure of the gas mixture Partial pressure of water Relative humidity Molal humidity Number of moles of the gas mixture