TRABAJA SOBRE ESTE DOC

CALIBRACION DE CALORIMETRO

t (s) T (K) V (V) I (A) 30 27.7 300.8 8.7 2.748 60 28.4 301.5 8.7 2.838 90 29.1 302.3 8.7 2.847

120 30.0 303.2 8.8 2.853 150 30.5 303.7 8.9 2.844 180 31.0 304.2 8.9 2.854 210 31.6 304.8 8.9 2.855 240 32.2 305.3 8.9 2.854 270 32.6 305.8 8.9 2.860 300 33.2 306.3 8.9 2.856 330 33.7 306.8 8.9 2.871 360 34.2 307.3 9.0 2.866 390 34.9 308.0 9.0 2.873 420 35.4 308.5 9.0 2.806 450 36.0 309.2 9.0 2.816 480 36.5 309.7 9.0 2.815 510 37.1 310.3 9.0 2.818

ΔH hidratación MgSO4

masa (g) agua T inicial (agua) (˚C)221.32 26.7

masa (g) soluto T final (agua + soluto) (˚C)12.06 30.5

ΔH hidratación MgSO4.7H2O

masa (g) agua T inicial (agua) (˚C)221.85 27.0

masa (g) soluto T final (agua + soluto) (˚C)12.06 26.4

T (˚C)

masa calorimetro (g) masa (g) agua257.34 35.95 221.39

q(kJ)0.7171.4812.2293.0133.7974.572 usamos la formula.5.3366.0966.8737.6268.4329.286

10.084 donde m = masa del agua10.607 cp = calor especifico del agua = 4,184 J/gK11.405 C = capacidad calorifica del calorimetro12.161 Tt = temperatura a determinado tiempo12.935

SE tiene esntonces que la capacidad calorifica delcalorimetro es:

C = 0,41 Kj

0.92673854capacidad calorifica del 0.413calorimetro Kj

𝐸_𝑐𝑒𝑑𝑖𝑑𝑎=𝐸_𝑎𝑏𝑠𝑜𝑟𝑏𝑖𝑑𝑎𝑉𝐼𝑡=(𝑚𝑐_𝑝+𝐶)(𝑇_𝑡−𝑇_0)

temperatura inicial (˚C)26.7

x = Tt-To y = q 1.0 0.717228 1.7 1.481436 2.4 2.229201 3.3 3.012768 3.8 3.79674 4.3 4.572108 4.9 5.335995 5.5 6.096144 5.9 6.87258 6.5 7.62552 7.0 8.432127 7.5 9.28584 8.2 10.08423 8.7 10.60668 9.3 11.4048 9.8 12.1608 10.4 12.93462

- 2.0 4.0 6.0 8.0 10.0 12.0 0

2

4

6

8

10

12

14

f(x) = 1.33960913892794 x − 1.03411874826937R² = 0.997233449614589

𝑉𝐼𝑡=(𝑚𝑐_𝑝+𝐶)(𝑇_𝑡−𝑇_0)

- 2.0 4.0 6.0 8.0 10.0 12.0 0

2

4

6

8

10

12

14

f(x) = 1.33960913892794 x − 1.03411874826937R² = 0.997233449614589

t (s) T (K) V (V) 30 27.7 300.8 8.7 60 28.4 301.5 8.7 90 29.1 302.3 8.7

120 30.0 303.2 8.8 150 30.5 303.7 8.9 180 31.0 304.2 8.9 210 31.6 304.8 8.9 240 32.2 305.3 8.9 270 32.6 305.8 8.9 300 33.2 306.3 8.9 330 33.7 306.8 8.9 360 34.2 307.3 9.0 390 34.9 308.0 9.0 420 35.4 308.5 9.0 450 36.0 309.2 9.0 480 36.5 309.7 9.0 510 37.1 310.3 9.0

8.9 0.108803654782906

masa (g) agua221.39

Calor especifico H2O

T (˚C)

I (A) q(kJ) 2.748 0.717 2.838 1.481 2.847 2.229 2.853 3.013 2.844 3.797 2.854 4.572 2.855 5.336 2.854 6.096 2.860 6.873 2.856 7.626 2.871 8.432 2.866 9.286 2.873 10.084 2.806 10.607 2.816 11.405 2.815 12.161 2.818 12.935 2.840

0.0311647661159012

masa (kg) agua VI (kJ) 0.025256160.22139 mcp 0.92673854

kJ/kg. K Capacidad calo0.402532784.186

0 100 200 300 400 500 600 296.0

298.0

300.0

302.0

304.0

306.0

308.0

310.0

312.0

f(x) = 0.0190114379084967 x + 300.611029411765R² = 0.997365557412172

tiempo (s)

Tem

pera

tura

(K)

𝑉𝐼𝑡=(𝑚𝑐𝑝+𝐶)(𝑇𝑡−𝑇0)𝑇𝑡= "𝑉𝐼 " /(( + )𝑚𝑐𝑝 𝐶 ) 𝑡+ 0𝑇

𝑉𝐼" " /(( + ))𝑚𝑐𝑝 𝐶 𝑠=𝑝𝑒𝑛𝑑𝑖𝑒𝑛𝑡𝑒

la s es segundos

0 100 200 300 400 500 600 296.0

298.0

300.0

302.0

304.0

306.0

308.0

310.0

312.0

f(x) = 0.0190114379084967 x + 300.611029411765R² = 0.997365557412172

tiempo (s)

Tem

pera

tura

(K)

𝑉𝐼𝑡=(𝑚𝑐𝑝+𝐶)(𝑇𝑡−𝑇0)𝑇𝑡= "𝑉𝐼 " /(( + )𝑚𝑐𝑝 𝐶 ) 𝑡+ 0𝑇

𝑉𝐼" " /(( + ))𝑚𝑐𝑝 𝐶 𝑠=𝑝𝑒𝑛𝑑𝑖𝑒𝑛𝑡𝑒