Chemical Engineering Thermodynamics

Consider the reaction, C + O₂ ⇋ CO₂ ;ΔH = – 94 kcal. What will be the value of ΔH for the reaction CO₂ → C + O₂?

  • A. -94 kcal
  • B. + 94 kcal
  • C. > 94 kcal
  • D. < -94 kcal
Answer: Option B.

The change in enthalpy s given as enthalpy of the products – enthalpy of the reactants since, the given reaction is opposite of given reaction only the sign changes.

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