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Heat of Reaction

The heat of reaction represents the difference in the enthalpies of the reaction products and reactants at constant pressure and at a definite temperature, with every substance in a definite physical state. If heat is liberated in the reaction, the process is said to be exothermic and heat of reaction is a negative number. If heat is absorbed, the process is endothermic and heat of reaction is a positive number.

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                                           Heat of reaction
Material       Reaction                     (Kcal/g-mole)     Ref.
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Denture resin
  acrylic      Methyl methacrylate
                 to polymethyl methacrylate       -13.9        88
Gypsum         Calcium sulfate hemihydrate + water
                 to calcium sulfate dihydrate      -3.9        87
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Introduction to Biomaterials Properties | Biomaterials Properties Table Listing |
References (1-100) | References (101-200) | References (201-244) |

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Revised April, 1996
Biomaterials Properties Database, University of Michigan
Contact: Dr William J. O'Brien, Director (FAX: 313-647-5293).
Copyright © Quintessence Publishing, 1996.

http://www.lib.umich.edu/dentlib/Dental_tables/Heatrxn.html

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