CH 204 – Introduction to Chemical Practice
Experiment 10 – Kinetics
Joshua Fu*
Tien Tran
TA: Jamie Trindell
April 25, 2016
INTRODUCTION This experiment focused on the concept of chemical kinetics, which describes the speed at which a chemical reaction occurs and the amount of reactant or product remaining after a specific period of time. Kinetics is important in analyzing the rates of certain species and reactions, and is a crucial technique to predict different reactions. Kinetics is a very broad topic, thus the experiment focused only on the derivation of empirical rate laws and their corresponding rate constants. The rate of a specific reaction can be expressed with an experimentally-determined, or empirical, rate law in the form of rate = k[A]x[B]y[C]z. The exponents x, y, and z depend on the term …show more content…
To do this a 3 mL pipette was used to add 9 mL of 0.02 M KI from the stock solution to a clean 30 mL beaker labelled “KI”. A 3 mL pipette to add 8 mL of 0.02 M FeCl3 from stock solution into a clean 30 mL beaker labelled “Fe”, noting that FeCl3 was dissolved in 0.1 M HCl for stability, and caution was exercised when this solution was handled. 10 mL of deionized water was added to a clean 30 mL beaker labelled “H2O”. Three disposable 3 mL pipettes were then labelled “KI”, “H2O”, and “Fe” for their corresponding beakers. Lab quest was then prepped for data collection by: plugging it in and turning it on, plugging the SpectroVis plus into the USB, selecting “sensors” then “Data collection”, selecting “time based” in the mode box, changing the interval to “5” s/sample, changing the duration to “120 s”, saving these settings, selecting “change wavelength”, typing “430” into the selected wavelength box while making sure the “report average of wavelength band” box was checked, saving these settings, and calibrating the
Experiment 10 – Kinetics
Joshua Fu*
Tien Tran
TA: Jamie Trindell
April 25, 2016
INTRODUCTION This experiment focused on the concept of chemical kinetics, which describes the speed at which a chemical reaction occurs and the amount of reactant or product remaining after a specific period of time. Kinetics is important in analyzing the rates of certain species and reactions, and is a crucial technique to predict different reactions. Kinetics is a very broad topic, thus the experiment focused only on the derivation of empirical rate laws and their corresponding rate constants. The rate of a specific reaction can be expressed with an experimentally-determined, or empirical, rate law in the form of rate = k[A]x[B]y[C]z. The exponents x, y, and z depend on the term …show more content…
To do this a 3 mL pipette was used to add 9 mL of 0.02 M KI from the stock solution to a clean 30 mL beaker labelled “KI”. A 3 mL pipette to add 8 mL of 0.02 M FeCl3 from stock solution into a clean 30 mL beaker labelled “Fe”, noting that FeCl3 was dissolved in 0.1 M HCl for stability, and caution was exercised when this solution was handled. 10 mL of deionized water was added to a clean 30 mL beaker labelled “H2O”. Three disposable 3 mL pipettes were then labelled “KI”, “H2O”, and “Fe” for their corresponding beakers. Lab quest was then prepped for data collection by: plugging it in and turning it on, plugging the SpectroVis plus into the USB, selecting “sensors” then “Data collection”, selecting “time based” in the mode box, changing the interval to “5” s/sample, changing the duration to “120 s”, saving these settings, selecting “change wavelength”, typing “430” into the selected wavelength box while making sure the “report average of wavelength band” box was checked, saving these settings, and calibrating the