To determine the heat of ionization of weak acid
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I.Purpose:An unkown acid solution will be identified by comparing experimentally derived Kavalues with the Kavalues of acetic acid, monochloro-acetic acid, dichloroacetic acid, or trichloro-acetic acid.II.Experimental Method: Refer to pages 83-85 of the Course Manual.III.Results:1.Heat Capacity of CalorimeterTable 1: Volume and Initial Temperatures of Hot and Cold WaterVolume(mL)InitialTemperature(°C)HotWater50.00 ±0.541.8 ± 0.01ColdWater50.00 ±0.522.4 ± 0.01Table 2: Time after mixing and temperature of mixtureTime AfterMixing (s)Temperature ofMixture (oC)024.61531.43031.54531.56031.57531.49031.410531.412031.413531.315031.316531.318031.319531.321031.3
22531.224031.22. Neutralization of Strong AcidTable 3: The Concentrations, Volumes, and Initial Temperatures of HCl and NaOHConcentration (M)Volume (mL)InitialTemperature (°C)Strong Acid(HCl)1.00550 ±0.523.1 ± 0.01Strong Base(NaOH)0.9145