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chem lab 3.docx

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Department
Chemistry
Course
CHM1311
Professor
A L L
Semester
Spring

Description
Experiment 3 Enthalpy of Various ReactionsIntroductionThe purpose of the experiment is to calculate the enthalpies of various reactions using data gained from the experiment as well as equationsA simple Styrofoam cup calorimeter was used in all three procedures It is used to help measure changes in thermal energy through temperature changes Temperature changes reflect the average total kinetic energy in particles and thermal energy is stored as kinetic energyDespite the fact that heat is lost to the surroundings to make things simpler it is assumed that no energy is lost when measuring the changes This leads to the results that are not always completely accurate Using temperature changes recorded by the calorimeter we can measure the thermal temperature using the specific heat capacity quantity an intensive property that does not depend on the amount of the matter there The equation to find the specific heat capacity is qmctemperature change where c is the specific heat capacity m is the mass and q is the energy evolved in the reactionWebsite Reference WikipediaProcedure As described in the lab manual Enthalpy of various reactions Experiment 3 pg 3338
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