Ordinarily, the partial pressure of water vapor in the air is less than the equilibrium vapor pressure at the ambient temperature; this is why a cup of water will spontaneously evaporate. The ratio of the partial pressure of water vapor to the equilibrium vapor pressure is called the relative humidity. When the relative humidity is 100%, so that water vapor in the atmosphere would be in diffusive equilibrium with a cup of liquid water, we say that the air is saturated.* The dew point is the temperature at which the relative humidity would be 100%, for a given partial pressure of water vapor. Suppose that the temperature on a certain summer day is 30°C. What is the dew point if the relative humidity is 90%? What if the relative humidity is 40%?

Q: Three thousand cubic meters per day of a gas mixture containing methane and butane at 21 oC enters…

A: Absorption is a separation operation in which the solute is absorbed with the help of liquid…

Q: Air with 100% humidity is not pleasant, even at 68°F. Air with 50% humidity at 68°F can be produced…

A: Air is dehumidified by cooling and mixing it with hot and humid air. The schematic of the process is…

Q: On an uncomfortable summer day, the air is at 87 °F and 80 % relative humidity. A laboratory air…

A: Consider outside air: Temperature, TA = 87°F Relative humidity, hr(A) = 80%   From the psychrometric…

Q: 2. The absolute humidity at atmospheric pressure at 30 ° C is 0.011 kg water / kg dry air. Specify:…

A: Given: Absolute humidity y1 = 0.011 kg water / kg dry air Pressure = Atmospheric = 1 atm = 101.325…

Q: 2-6. Vapor pressure data of carbon dioxide are given below. Estimate the vapor pressure of carbon…

A:

Q: 150 moles of gaseous acetylene are stored in a rigid 15.5 L tank. The temperature is 160°C.…

A:

Q: 10 m³ of cold air (measured at 287 K and 101.3 kN/m2 saturated with water vapor) is compressed to…

A: Percentage humidity after the treatment is asked.

Q: 2. A liter flask is filled with air. Hydrogen enters the flask through a tube and gas leaves the…

A: A flask filled with air is given.Flask volume, .The flow rate of hydrogen entering the flask and the…

Q: 30,000 m³ of coal gas measured at 289 K and 1 atm is saturated with water vapour. This is compressed…

A: We know that... H1=MAMB·PAPt-PA where, H1= Humidity at initial condition…

Q: ) A 3.0 L flask containing 2.0 mol O2 and 1.0 mol N2 is in a room that is at 22.0° What is the total…

A: The volume of the flask = 3 L Moles of O2 in the flask = 2 mol Moles of N2 in the flask = 1 mol The…

Q: absolute humidity at atmospheric pressure at 27 ° C is 0.011 kg water / kg dry air. Specify: a.…

A:

Q: The absolute humidity at atmospheric pressure at 32 ° C is 0.019 kg water / kg dry air. Specify: a)…

A: A psychrometry chart helps us in giving the values of water vapor at saturated conditions. We can…

Introduction and Basic Calculations in Multiphase Systems

Chemical calculations involve material and energy balance calculations which enable engineers to calculate material and energy requirements in various chemical processes. In addition to this, chemical calculations help to study the behavior and properties of gases, liquids, and their mixtures.