Answer to Question #113564 in General Chemistry for Brittnie Mason

Question

you are assigned to a team that is conducting research on the decomposition of a protein P in the presence of an oxidizing agent OA while in aqueous solution. As the kinetics expert on the team, your job is to determine the rate lw for the reactioj. you have available a spectrophotometer that can measure the concentration of the protein at any concentration above a minimum of 0.1 mM. the soectrometer can produce a continuous plot of protein concentration against time, similar to the plot in question 6 above. describe in detail the experiments and calculations you will perform to determine the rate law for the reaction

Answer 1

Light from a light source will be passed through a test tube within which the reaction is occurring. The amount of light absorbed by the sample is directly proportional to the concentration of the light-absorbing chemical. After the light passes through this chemical, it is allowed to hit a photo-electric cell, which in-turn conducts electricity depending on the intensity of light hitting it. The magnitude of electricity conducted can be measured with an ammeter. Changes in the amount of light hitting the photocell allow measurement of changes in the concentration of dissolved chemical.

Rate of the reaction = del[Protein]/ del T

we have to measure the decrease in concentration of protein in a fixed time interval and we have to plot it. From the plot we can derive the rate of the reaction and the rate constant.

The question 6 is not given in the question although.