Q5. Gradient of best-fit-line ( m ) is 1.1861. From the graph, the equation of best fit line is y1.1861x-7.1477 where y ln R and x lnS2O82-. The gradient of the graph is 1.1861 and thus, reaction order with respect to lnS2O82-, n1.18611 (to nearest integer).
The lab report below was submitted as part of the coursework for CM1131 Basic Physical Chemistry. Please do not plagiarise from it as plagiarism might land you into trouble with your university. As reaction orders, n and m is defined as the power to which the concentration of that reactant is raised to in the experimentally determined rate equation. N and m cannot be found theoretically and are experimentally determined to be 1. Feb 2, 2010. If a chemical reaction has a slow rate, a small portion of molecules react to form products in a. In order to study the kinetics of this reaction, or any reaction, there must be an experimental way. Reaction at the lab benches. This means that the reaction is first order with respect to I- and first order with respect to S2O82-. The overall rate order is 2. This reaction is said to be bimolecular since two reactant species are involved in the rate determining step. This reduces the concentration of the reactants in the conical flask. Pipetting the reactants into the conical flask would ensure that the reactants are added in the requisite quantities and that the eventual results are accurate. 2. Results Calculations: 2.1 Determination of Reaction, orders and Rate Constant, molarity of KI: 0.2000M, molarity of S2O82- : 0.1000M, molarity of S2O3 2 - : 0.003300M. Q1. Total volume of solution in the conical flask for each reaction is 26mL 26cm-3, in Solution 1 to 5: S2O82- (0.01 0.1) 0.026 0.03846 moldm-3, in Solution 1: I- (0.01 0.2) 0.026.