Cold water at 10C flows in a packed tower at 3.0 10-2 kg/s. The packed tower is filled with 10-mm spherical pyrogallol with void fraction 0.38. The tower is 15 cm in diameter and 1 m in height. The solubility of pyrogallol in water at the temperature is 400 g/L. Estimate the mass transfer coefficient for the configuration. Assume dilute concentrations. Determine the concentration at the outlet of the tower and the flux of pyrogallol.