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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
States of Matter

NTA Abhyas 2020 · Chemistry · States of Matter

The relative humidity of air is 80% at 27 ^ o C. .If the aqueous...

The relative humidity of air is \text{80%} at 27oC.\text{27}{}^{o} \text{C}\text{.} .If the aqueous tension at the same temperature is 27mm\text{27}\text{mm} of Hg.\text{Hg}\text{.} The partial pressure of water vapour in the air will be (in mm\text{mm} of Hg\text{Hg} ).

Correct answer

21.6

Step-by-step solution

Relative humidity =PartialpressureVapourpressure×100= \dfrac{Partialpressure}{Vapourpressure} \times 100

⇒Partialpressure27×100=80⇒ \dfrac{Partialpressure}{27} \times 100 = 80

⇒Partialpressure=80×27100⇒ Partialpressure = \dfrac{80 \times 27}{100}

∴Partialpressure=21.6mm∴ Partialpressure = 21.6mm of Hg
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