The dry bulb temperature of the moist air sample (in 0C) is __________

Question

The partial pressure of water vapour in a moist air sample of relative humidity 70% is 1.6 kP, the total pressure being 101.325 kPa. Moist air may be treated as An ideal gas mixture of water vapour and dry air. The relation between saturation temperature (T_s in K) and saturation pressure (P_s in kPa) for water is given by

n (P_s/P_o) = 14.317 – 5304/T_s,

Where P_o = 101.325 kPa. The dry bulb temperature of the moist air sample (in ⁰C) is ________________