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anonymous

  • one year ago

If the molar enthalpy for the formation of a compound is -192 kJ, why is the molar enthalpy of the decomposition of that compound 192 kJ? A.) because of the Law of conservation of heat B.) because of the law of conservation of energy c.) because of the law of conservation of mass d.) because of the law of conservation of enthalpy

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  1. anonymous
    • one year ago
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    formation means it's an exothermic reaction, hence it's a negative value (favorable reaction). A positive enthalpy is an endothermic reaction (non favorable reaction) . Or the answer D

  2. cuanchi
    • one year ago
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    B.) because of the law of conservation of energy There is not " law of conservation of enthalpy" , it is Hess's Law or law of conservation of energy or First law of thermodynamics. https://en.wikipedia.org/wiki/Hess's_law

  3. anonymous
    • one year ago
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    Oh fudge, I'm forgetting my chemistry ;-;

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