The pressure of water vapor in the air at a temperature of 14 degrees is 9 mm Hg.
| June 2, 2021 | education
The pressure of water vapor in the air at a temperature of 14 degrees is 9 mm Hg. The pressure of saturated water vapor at the same temperature is 12 mm Hg. What is the relative humidity of the air?
P = 9 mm Hg
Рн = 12 mm Hg.
φ -?
Relative air humidity φ is determined by the formula: φ = Р * 100% / Рн. Where Р is the pressure of water vapor at a given temperature, Рн is the pressure of saturated water vapor at a given temperature.
φ = P * 100% / Rn.
φ = 9 mm Hg * 100% / 12 mm Hg = 75%.
Answer: relative humidity φ = 75%.
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