(a) The density of gaseous ammonia at 473K and 50 bar is 24.3kg/m3 . Estimate its fugacity.Marks (2.5) (b) The vapor pressure of liquid chlorine at 0O C (273K) is 3.71 bar and the molar volume in these conditions is 6.01 x 10-3 m3 /mol. Calculate the fugacity of liquid chlorine at 273K.