Essay about Determining Molar Enthalpy Of Dehydration Of Sodium Acetate
1267 Words Nov 7th, 2016 6 Pages
TA: Feifei Xu
Determining Molar Enthalpy of Dehydration of Sodium Acetate Trihydrate
In this lab, two solid substances, sodium acetate and sodium acetate trihydrate, will be analyzed for the heat of solution for both processes. This allowed the calculation of the molar enthalpy of dehydration of sodium acetate trihydrate. Calorimetry was used to experimentally determine the heat of solution for both reactions.
Procedure: This lab was performed based on the procedure outlined in “Exp #7 Calorimetry.” No changes to the procedure were made.
Data and Observations: All data and observations were recorded in the lab notebook. Pages from the lab notebook are attached to the lab.
Results and Calculations:
First, graphs were generated with a best fit line to be extrapolate the max temperature that the reaction achieved.
Figure 1: Temperature vs Time for Heat Capacity of Calorimeter
Figure 2:Temperature vs Time for Heat of Solution of Sodium Acetate
Figure 3: Temperature vs Time for Heat of Solution of Sodium Acetate Trihydrate
A summary of all values obtained in from the graph are included in the following table:
Table 1: Final Temperatures of the Reactions from Calorimetry (y-intercept)
Substance Final Temperature for Reaction
Hot water 36.046℃
Sodium Acetate 27.098℃
Sodium Acetate Trihydrate 12.939℃
To determine the Heat capacity of the calorimeter, the following calculations are performed:…