a Air flowing at a rate of 23 kg/min is used to remove HCl gas provided by a reactor at the rate od 1 kg/min. HCl is recovered by scrubbing with fresh water in a packed column to yield air containing not more than 4PPM by weight of HCl. Calculate the height of packing required, if the height of an overall transfer unit (gas phase) is 0.6 m? HCl gas may be assumed to be extremely soluble in acid solution and at all concentrations encountered in this column a Air flowing at a rate of 23 kg/min is used to remove HCl gas provided by a reactor at the rate od 1 kg/min. HCl is recovered by scrubbing with fresh water in a packed column to yield air containing not more than 4PPM by weight of HCl. Calculate the height of packing required, if the height of an overall transfer unit (gas phase) is 0.6 m? HCl gas may be assumed to be extremely soluble in acid solution and at all concentrations encountered in this column