4) A continuous gravity decanter is to separate chlorobenzene, with a density of 1109 kg/m³, from an aqueous wash liquid having a density of 1020 kg/m³. If the total depth in the separator is 1m and the interface is to be 0.6m from the vessel floor, a) What should the height of the heavy-liquid overflow leg be h= .9679m b) How much would an error of 10 mm in this height affect the position of the interface? =20.8