Suppose that ammonia, applied to a field as a fertilizer, is washed into a farm pond containing 3.0 × 106 l of water. if the ph of this pond is found to be 9.81, what volume of liquid ammonia found its way into the pond? [given: kb(nh3) = 1.8 × 10–5; the density of liquid ammonia is 0.771 g/cm3]

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.