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  • 03-04-2018
  • Chemistry
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Define the standard heat of formation of mgco3

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jamuuj jamuuj
  • 13-04-2018
The standard heat of formation is the energy change that occurs when 1 mole of a substance is made from its elements in their standard states ( most stable form of the element at 1 bar of pressure and the specified temperature, usually 298 K or 25 degrees Celcius) 
E.g for MgCO3
Mg (s) + C (s) + 3/2 O2 (g) = MgCO3
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