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Aroom having dimensions of 5 m x 5 m x 3 m contains air at 25°C and 100 kPa at a relative humidity of 75%. The corresponding value of ps is 3.169 kPa. The partial pressure of dry air will be nearly (a) 106 kPa (b) 98 kPa (c) 86 kPa (d) 78 kPa |
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Answer» (b) 98 kPa φ = \(\cfrac{p_v}{p_s}\) 0.75 = \(\cfrac{p_v}{3.169}\) Pv = 2.376 kPa Pt = Pa + Pv 101.3 = Pa + 2.376 Pa = 98.92 kPa |
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