Iodine gives a deep yellowish brown color in aqueous solution. As acetone is iodinated and Iodine is converted to iodide ion, this color slowly fades as iodine is consumed. Thus iodination of acetone can be investigated by the change in absorbance. In the present investigation, kinetics of this reaction has been studied colorimetrically. The extent of the reaction has been monitored by measuring the absorbance in the visible region (λmax = 470nm) There is a decrease in absorbance indicating the consumption of Iodine. H+ ion acts as a catalyst in this reaction. Thus, the kinetics of iodination of acetone has been studied in presence of HCl and H2SO4 and the rates have been compared to determine their relative strength. An attempt has been made to reduce the consumption of chemicals to a very low level.