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exp13_template - Experiment 13 Chemical Kinetics Name TA...

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Experiment 13 – Chemical Kinetics Name Qinxin Qin Lab Day and Time Monday 1:00pm-4:50pm TA Na Zhang Section 403 Documentation Ashley Murphy, Experiment 13 – Chemical Kinetics Lab Manual GRADING RUBRIC Possible Points Points Received Introduction 10 Purpose of report Goals of the experiment Materials and Methods 10 Reference lab manual Only describe deviations Results and Discussion 140 Inserted titles for tables Inserted graphs into template Inserted captions for each graph Showed complete sample calculations Summarized all data in tables Answered questions completely Error analysis Laboratory Technique 40 TOTAL (200) TA Comments/Suggestions:
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C HEMISTRY 102L R EPORT T EMPLATE EXPT. Chemical Kinetics: Reaction of Crystal Violet with Sodium Hydroxide 13 13 Introduction The purpose of this report is to describe the experimental procedures taken, the results gleaned from the experiment and to analyze the results qualitatively and quantitatively. The objective of the experiment was to gain an understanding of chemical kinetics by observing the effects of reactant concentration on reaction rate and to experimentally determine the rate law and rate constant for a model reaction of Crystal Violet with Sodium Hydroxide. Materials and Methods The procedure for this experiment was taken from the lab manual for Experiment 13: Chemical Kinetics: Reaction Crystal Violet with NaOH. No deviations were made from the given procedure. Results and Discussion To determine reaction rates the measurement of concentration over time is required. Using colorimetry the rate is found by observing the decolorization of crystal violet from its bright violet hue to a colorless state using NaOH. This occurs because the intense violet color is caused by the extensive system of conjugated double bonds that extend over all three phenyl rings and the central carbon atom of the crystal violet. This allows the molecule to absorb electromagnetic radiation in the visible portion of
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