Estimation of the Activation Energy for the Iodination of Acetone Through the Effect of Temperature on the Rate ConstantJoel Costa, Alex Fuentes, Michael Chea, Rex NweremDr. Morgan FergusonJuly 9, 2013ABSTRACT It is often important to determine the rate at which a chemical reaction takes place, i.e., how fast it yields the desired products.
CHEMICAL KINETICS 1. Reaction Rate. Bromination of Acetone., E a is the activation energy, and R is the gas constant. The values of A and E a can be determined by linearizing the Arrhenius equation A plot of ln k versus 1/T will have a slope of -E a /R and an intercept of ln A.
Temperature is one of the factors that influence the rate of reactions and it does so by providing energy to reactant particles so that a larger fraction of them reach the activation energy necessary to start the reaction. The purpose of this experiment was to estimate the Activation Energy for the Iodination of Acetone through the analysis of the relationship between the rate constant. Mathematically, given that the temperature is the denominator of a negative exponent, the larger the temperature, the larger the rate constant and, consequently, the faster the reaction (increased rate). 652 Words 3 PagesExperiment A1:Kinetics of the Reaction between Acetone and IodineThe key aim of this experiment was to determine the rate equation for the acid-catalysed iodination of acetone and to hence consider the insinuations of the mechanism of the rate equation obtained.The stoichiometric equation for the reaction between iodine and acetone is below, followed by the rate equation (where x,y,z and k are the values to be obtained):I2 + CH3COCH3 CH3COCH2I + HI-dI2/dt = k I2x CH3COCH3y H+z.
2127 Words 9 PagesFrom all of these experiments one can learn how these reactions work.I.Procedure:2.1:NMR ExperimentTake an NMR tube with 0.50 mL of acetone and put it into the NMR. Set temperature at 45 degrees Celsius. Then weigh 7.4 mg (4.0.10^5 mol) of (1-bromoethyl)benzene in a screw top vial. Weigh out 6.0 mg (4.0.10^5 mol) of NaI in a screw top vial. Put 0.50 mL of acetone d-6 into the NaI vial using a 500 µL syringe. Swirl the vial and dissolve the NaI. Take the dissolved NaI and place it into the (1-bromoethyl)benzene.
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