The partial pressure of water vapor in air at a temperature of 20 ° C is 1.4 kPa. What is the relative humidity of the air?
| August 6, 2021 | education
From the reference table “Saturated vapor pressure at a temperature of 0-374 C” we choose for a temperature of 20 C Psat = 2.3488 kPa.
Accordingly, according to the formula Ф (relative air humidity) = Р (partial pressure) / Рsat (saturated vapor pressure), it means Ф = 1.4kPa / 2.3488kPa = 0.59 = 59%
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