Chemical Kinetics

Chemical kinetics Date: 20th, Aug., 2010 urinate: Huang Shiqi A0078026E Email address: sunnyqi0801@gmail.com arrange No.: Fr1 Lab supply: Jerome Lime A0073046L Abstract: The ordain objectives of the experiment were to get a stage business the response orders and come out constant of a chemical reply, development the method of initial response pass judgment and to tick the activation vim from the temperature colony of the reaction tempo found on Arrhenius theory. The chemical reaction used was iodide-persulfate reaction. base on the par: R = k [I-]n[ S2O82-]m and Arrhenius equation, the orders, enjoin immutable (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 footstep constant The reaction studied is iodide-persulfate reaction, of which the equation is showed below. 2I- + S2O82- I2 + 2SO42- The run constant (k), and orders (n and m) of the reaction with respect to each of the reactants, in the expression for the rate of reaction R are showed below, R = k [I-]n[S2O82-]m where the substantive brackets present concentrations expressed as moles per liter. In order to determine their values, ii fit(p)s of experiments need to be carried out.

In the first set (part A(i)), the initial rate of reaction go away be measured for different reaction mixtures in which the S2O82- concentration is held constant but the concentration of I- is varied. In the jiffy set of experiment (part A(ii)), [I-] bequeath be held constant charm [S2O82-] is varied. Considering the first set of experiments, since [S2O82-] is to be held constant, then the rate of reaction is inducen by R = k1 [I-]n where k1 = k [S2O82-]m Therefore put down R = log k1 + n log [I-], and, if the rate expression is correct, then we conceive a plot of log R versus log [I-] to give a straight follow of slope equal to n. Likewise, if [I-] is unbroken constant as in the...If you want to get a full essay, order it on our website: Orderessay

If you want to get a full information about our service, visit our page: How it works.