An agitated tank is required to disperse gas in a solution of properties similar to those of water. The tank is 3m in diameter and a power level of 0.8kw/m3 is chosen. Assume a standard Rushton turbine configuration and fully turbulent conditions. (i) What power is required by the impeller ? [5 marks] (ii) At what speed should the impeller be driven? [5 marks] (iii) If a small pilot scale tank 0.3m diameter is to be constructed to test the gas dispersion process, at what speed should the impeller be driven