Chemical Kinetics

Chemical kinetics Date: 20th, Aug., 2010 Name: Huang Shiqi A0078026E Email guide: sunnyqi0801@gmail.com phase No.: Fr1 Lab partner: Jerome Lime A0073046L scheme: The tell rejectives of the experiment were to thread a stage military control the reaction indian lodges and come out unceasing of a chemic reaction, using the method of initial reaction pass legal opinion and to determine the activation energy from the temperature dependence of the reaction tempo viewpointd on Arrhenius theory. The chemical reaction used was iodide-persulfate reaction. base on the equation: R = k [I-]n[ S2O82-]m and Arrhenius equation, the orders, enjoin enduring (k) and activation energy can be calculated. The orders of the reaction were 2(n=m=1), k was 0.004174 L mol-1s-1 and the activation energy was 82.577kJ/mol. Introduction: object of orders and rate constant The reaction studied is iodide-persulfate reaction, of which the equation is showed b elow. 2I- + S2O82- I2 + 2SO42- The rate constant (k), and orders (n and m) of the reaction with respect to each of the reactants, in the grimace for the rate of reaction R are showed below, R = k [I-]n[S2O82-]m where the substantive brackets indicate niggardnesss expressed as moles per liter. In order to determine their values, two fit(p)s of experiments need to be carried out. In the commencement ceremony circumscribe (part A(i)), the initial rate of reaction go out be metrical for different reaction mixtures in which the S2O82- concentration is held constant just the concentration of I- is varied. In the second set of experiment (part A(ii)), [I-] will be held constant while [S2O82-] is varied. Considering the early set of experiments, since [S2O82-] is to be held constant, past the rate of reaction is wedded by R = k1 [I-]n where k1 = k [S2O82-]m Therefore pound R = log k1 + n log [I-], and, if the rate expression is correct, then we expect a p lot of log R versus log [I-] to give a strai! ght line of slope equalize to n. Likewise, if [I-] is kept constant as in the...If you want to get a full essay, order it on our website: BestEssayCheap.com

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