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3) Tabela pomiarów temperatury: |
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Nr |
czas [min] |
temp. [C] |
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CIEPŁO SPALANIA |
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1 |
0 |
22,09 |
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2 |
0,5 |
22,09 |
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M |
138,07 |
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3 |
1 |
22,09 |
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1) Naważki i dane liczbowe |
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4 |
1,5 |
22,09 |
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a) Masa wody w kalorymetrze i bombie |
mw |
2885 |
[g] |
5 |
2 |
22,09 |
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b) Masa tabletki |
m |
1,0028 |
[g] |
6 |
2,5 |
22,085 |
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c) Masa drucika do spalań |
md |
0,0284 |
[g] |
7 |
3 |
22,085 |
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d) Masa niespalonego drucika |
mn |
0,0038 |
[g] |
8 |
3,5 |
22,08 |
6,7 |
e) Pojemność cieplna kalorymetru |
r |
1478 |
[J/K] |
9 |
4 |
22,08 |
6,7 |
f) Ciepło właściwe wody |
Cw |
4,1855 |
[J/g] |
10 |
4,5 |
22,075 |
22,985 |
g) Ciepło spalania drucika |
Cd |
6700 |
[J/g] |
11 |
5 |
22,07 |
23,8 |
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qJ |
10 |
[J] |
12 |
5,5 |
22,07 |
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2) Reakcja spalania: |
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13 |
6 |
22,18 |
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C7H6O3 + 7O2 = 7CO2 + 3H2O |
Συi,gaz = |
0 |
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14 |
6,5 |
22,8 |
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4) Obliczenia ΔT |
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15 |
7 |
23,2 |
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a) Metoda graficzna |
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16 |
7,5 |
23,38 |
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ta |
22,07 |
[C] |
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17 |
8 |
23,53 |
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tb |
23,9 |
[C] |
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18 |
8,5 |
23,625 |
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τ1/2 |
6,7 |
[min] |
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19 |
9 |
23,695 |
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a1 |
-0,0028 |
[K/min] |
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20 |
9,5 |
23,795 |
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a2 |
-0,0065 |
[K/min] |
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21 |
10 |
23,79 |
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ΔTkor |
1,89151 |
[K] |
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22 |
10,5 |
23,825 |
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q |
25461,131857925 |
[J] |
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23 |
11 |
23,843 |
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ΔUsp |
-3505,60278781781 |
[kJ/mol] |
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24 |
11,5 |
23,86 |
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25 |
12 |
23,875 |
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b) Metoda dokładna |
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26 |
12,5 |
23,88 |
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to |
22,03 |
[C] |
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27 |
13 |
23,89 |
22,985 |
ta |
22,07 |
[C] |
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28 |
13,5 |
23,892 |
22,985 |
tb |
23,9 |
[C] |
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29 |
14 |
23,894 |
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tk |
23,779 |
[C] |
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30 |
14,5 |
23,897 |
Suma: |
tśr,w |
22,08 |
[C] |
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31 |
15 |
23,9 |
625,386 |
tśr,k |
23,84 |
[C] |
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32 |
15,5 |
23,9 |
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n |
20 |
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33 |
16 |
23,9 |
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a1 |
-0,0028 |
[K/min] |
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34 |
16,5 |
23,9 |
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a2 |
-0,0065 |
[K/min] |
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35 |
17 |
23,9 |
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δ |
0,245344517045454 |
[K] |
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36 |
17,5 |
23,895 |
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ΔTkor |
2,07534451704545 |
[K] |
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37 |
18 |
23,89 |
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q |
27952,6718597236 |
[J] |
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38 |
18,5 |
23,885 |
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ΔUsp |
-3848,64918595138 |
[kJ/mol] |
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39 |
19 |
23,88 |
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40 |
19,5 |
23,88 |
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5) Wyniki: |
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41 |
20 |
23,875 |
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q |
26706,9018588243 |
[J] |
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ΔUsp (Wartość średnia) |
-3677,12598688459 |
[kJ/mol] |
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42 |
20,5 |
23,87 |
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ΔH˚sp |
-3677,12598688459 |
[kJ/mol] |
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43 |
21 |
23,865 |
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ΔH˚tw |
65,0659868845946 |
[kJ/mol] |
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44 |
21,5 |
23,86 |
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45 |
22 |
23,86 |
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Dane wzięte z P.W. Atkins "Chemia fizyczna: |
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46 |
22,5 |
23,857 |
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ΔH˚twCO2 |
-393,51 |
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47 |
23 |
23,855 |
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ΔH˚twH2O |
-285,83 |
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48 |
23,5 |
23,852 |
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49 |
24 |
23,849 |
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7C + 3H2 + 3/2O2 = |
C7H6O3 |
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50 |
24,5 |
23,846 |
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51 |
25 |
23,842 |
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(+)7ΔH˚twCO2 |
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52 |
25,5 |
23,841 |
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(+)3ΔH˚twH2O |
(-)ΔH˚sp |
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53 |
26 |
23,84 |
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54 |
26,5 |
23,835 |
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7CO2 + 3 H2O = |
C7H6O3 |
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55 |
27 |
23,83 |
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56 |
27,5 |
23,83 |
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57 |
28 |
23,825 |
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58 |
28,5 |
23,82 |
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59 |
29 |
23,82 |
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60 |
29,5 |
23,817 |
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61 |
30 |
23,81 |
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62 |
30,5 |
23,805 |
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63 |
31 |
23,8 |
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64 |
31,5 |
23,798 |
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65 |
32 |
23,795 |
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66 |
32,5 |
23,79 |
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67 |
33 |
23,788 |
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68 |
33,5 |
23,785 |
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69 |
34 |
23,78 |
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70 |
34,5 |
23,779 |
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