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5.66. Clasifica las siguientes reacciones como exotérmicas o endotérmicas:
a. La combustión del propano:
C3H8 (g)+ 502 (g) 3CO2 (g) + 4 H2O (g) + 531 kcal
b. La formación de la sal de mesa:
2Na(s) + Cl2 (g) 2NaCl (s)+ 196 kcal
c. La descomposición del pentacloruro de fósforo:
PCl5 (s) + 16 kcal PCl3 (s) + Cl2 (g)
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5.66. Clasifica las siguientes reacciones como exotérmicas o endotérmicas:
a. La combustión del pro...
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