The Fundamentals of Calorimetry
Benji Combs
January 29, 2023
CAROLINA
1
Data
Activity 1
Data Table 1
Trial 1 Temp. C 47
Trial 2 Temp. .C 49 48 47 46 45
Trial 1
Trial 2
Time (min)
Initial temperature of cold water, T.
19 C
21 C
1
Initial temperature 77 C 77 C of warm water, Tn Average 48 C 49 C temperature, Ta Temperature at 49.067 time o from graph, 47.267 -C D. To Heat lost by water in J to calorimeter 6214.197 5837.99 (q) 7J Heat capacity (C) of 10.839 0.0998 calorimeter in J/'c 0./T D./T Average Heat capacity (C) of 5.918 J/'C calorimeter in J/'c
2 3 4 5
46 45 45 44
6
43 42 42 42 41
45 44
7 8
44
9 10
43 43
*Note that the Average Heat Capacity (C) calculated above is used in Activities 2 and 3.
2016 Carolina Biological Supply Company
2
1. Create a spreadsheet and graph of the data from Data Table 1, plotting temperature vs. time, and use the Y intercept to find the temperature at time 0 when the two volumes of water are mixed.
a. Insert graph below.
Benji Combs Chart
50
48 f(x)**""0.67x * 49.07
46
f(x)
44 Temp (Celsius) 42 40 38 36
2
4
5
6
8
10
Time (min)
Trial 1 Trial 2
.. Linear (Trial 1) Linear (Trial 2)
Activities 2 and 3
Data Table 2
5g. CaClz 100 5
10g CaClz 100 10
15g CaCl2 100 15
5g NH4CI 100
10g NH4CI 100 10
15g NH4CI 100 14.99
Mass of water (g) Mass of salt (g) Moles of salt 0.045 0.090 (g x mol/g) Initial Temperature 16 12 (C) T: Final Temperature (C) 23 26 1 Change in 7 14 Temperature (C) @ 2016 Carolina Biological Supply Company
4.98
0.135
0.093
0.187
0.280
12
14
14
14
33
10
7
4
21
-4
-7
-1