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  • The Relative humidity of Air is <img alt="70 % \ at \ 27^{\circ} \mathrm{C}" src="https://entrancecorner.oncodecogs.com/gif.latex?70%20%25%20%5C%20at%20%5C%2027%5E%7B%5Ccirc%7D%20%5Cmathrm%7BC%7D"

The Relative humidity of Air is 70 % \ at \ 27^{\circ} \mathrm{C} If the aqueous tension at the same temperature is 30 MM of Hg.
The Partial pressure of water vapour in the air will be [in Mm of Hg]

Option: 1

 21.6 MM of  Hg


Option: 2

 21 MM of  Hg


Option: 3

 21.5 MM of  Hg


Option: 4

 21.9 MM of  Hg


Answers (1)

best_answer

\mathrm{\text { Relative Humidity }=\frac{\text { Partial Pressure }}{\text { Vapour Pressure }} \times 100}

\mathrm{\Rightarrow \text { Relativ } \text { humidity }=\frac{\text { Partial pressure }}{30} \times 100=70}

\mathrm{\Rightarrow \text { Partial Pressure }=\frac{70 \times 30}{100}=21 \ \mathrm{MM} \text { of Mg }}

Posted by

HARSH KANKARIA

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