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Answer to Question #27282 in Inorganic Chemistry for faith gituma

Question #27282
C3H3 +5O2=3CO2+4H2O+488KJ what is the value of heat produced (enthalpy)
Expert's answer

According to the chemical equation this combusting reaction is exotermic(the heat is released to the surrounding (+488 kJ)).

But the system is loosing the heat. Enthalpy views the process from the side of the system. That's why it's negative in the exotermic reactions
dH = -488kJ

Answer: dH = -488 kJ

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