Rate Laws (Section)
Consider the following reaction:
CH3Br(aq) + OH-(aq)→CH3OH(aq) + Br-(aq)
The rate law for this reaction is first order in CH3Br and first order in OH-. When [CH3Br] is 5.0 x 10-3 M and [OH-] is 0.050 M, the reaction rate at 298 K is 0.0432 M/s. (a) What is the value of the rate constant? (b) What are the units of the rate constant? (c) What would happen to the rate if the concentration of OH- were tripled? (d) What would happen to the rate if the concentration of both reactants were tripled?
Alexis Penny th September 16 , 2015 Experiment #03 Determining Avogadro’s Number CHEM 1315-077 Penny 1 Purpose of the Experiment & Techniques: The purpose of this experiment is to confirm Avogadro’s number through electrolysis. A copper strip and a zinc strip will be used as the electrodes, the copper strip as the anode and the zinc strip as the cathode, and put into a beaker of sulfuric acid to make the cell electrolytic. By determining the average current used in the reaction, along with the knowledge that all of the copper ions formed are the 2+ cations, the number of atoms in one mole of copper can be calculated and compared with Avogadro’s number.