Thermochemistry

 Exothermic Reaction              Endothermic Reaction
 Is a reaction that release    Is a reaction tha...
Thermochemistry

      Exothermic Reaction              Endothermic Reaction
   Energy of the products is        Energy ...
Thermochemistry

   Exothermic Reaction                 Endothermic Reaction
 Examples:                          Example...
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Thermochemistry

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Comparison between exothermic reaction and endothermic reaction

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Thermochemistry

  1. 1. Thermochemistry Exothermic Reaction Endothermic Reaction  Is a reaction that release  Is a reaction that absorb heat to the surrounding heat from the surrounding  Temperature of the  Temperature of the surrounding increase surrounding decrease  Energy level diagram  Energy level diagram chem2u
  2. 2. Thermochemistry Exothermic Reaction Endothermic Reaction  Energy of the products is  Energy of the products is less than reactants. more than reactants.  ∆H = negative  ∆H = positive  Energy for bond breaking is  Energy for bond breaking is less than energy from bond more than energy from formation bond formation  More energy released  More energy absorbed for during bond formation than bond breaking than energy energy absorbed for bond released during bond breaking formation chem2u
  3. 3. Thermochemistry Exothermic Reaction Endothermic Reaction  Examples:  Examples:  Neutralization reaction  Photosynthesis  Reaction between acids and  Dissolving ammonium salts in metals water  Adding water to concentrated  Decomposition of metal acids carbonate  Reaction between reactive  Decomposition of metal metals with water nitrates  Respiration  Burning of fuels  Haber process chem2u
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