The vapour pressure of water at 20°C is 17.5 torr. What will be the no. of moles of water…
Chemistry · JEE Main · NTA Exams — Equilibrium
The vapour pressure of water at 20°C is 17.5 torr. What will be the no. of moles of water present in one litre of air at 20°C and 40% relative humidity? \(\left(\text { R.H }=\frac{\text { partial pressure of } \mathrm{H}_{2} \mathrm{O}}{\text { V.P. of } \mathrm{H}_{2} \mathrm{O}}\right)\)
- 4.2 x 10-4 moles
- 4.2 x 10-6 moles
- 3.82 x 10-7 moles
- 3.82 x 10-4 moles
Answer
(D) 3.82 x 10 -4 moles
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