Reaction Rate Law Lab Report

Abstract: To determine the rate law in each reaction and find the reaction rate, an experiment was conducted with acetone, acid, iodine, and water. By using different concentrations of each substance, a number of 4 times, the rate was giving of each reaction and recorded the times it took to react. Based off the results from the first four reactions, further data was collect with a fifth reaction. Using 15mL of acetone, 10mL of hydrochloric acid, 5mL of iodine, and 20mL of water, we got a rate of 8.77× 10-7. The reaction rate was much higher than the rates of the previous reactions. So essentially the amount of water determines the rate, and the amount of acetone determines how long it takes the solution to react and become completely clear.

Then the time of each reaction was recorded when the solution was completed and turned clear. Reaction rate was then calculated using the initial concentration of I2 and time recorded. If reaction rate increases, the reaction is done faster and the reaction time decreases. The first order reaction is a reaction depending only on the concentration of two reactants. Determination of the rate law and activation energy of a chemical reaction requires a number of steps. By varying the concentrations of reactants in the iodination of acetone it was determined that the reaction is first order with respect to both acetone and hydrochloric acid concentration and zero order with respect to iodine concentration. The error in all parts of this experiment is relatively small. This reaction is fast enough to be performed in a reasonable amount of time, but not so fast that it is difficult to duplicate this