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    Enthalpy of Formation of CaO

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    Calcium metal burns according to the following equation: Ca(s) + 1/2 O2(g) --> CaO (s).
    When 1.00 g of calcium metal is burned in a constant pressure calorimeter with a heat capacity of 15.20 kJ/K, the temperature increases by 1.04 degrees Celcius. Calculate the enthalpy of formation of calcium oxide. Compare this answer with -635.09 kJ/mol.

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    Enthalpy of formation (DHof)is the enthalpy change when 1 mole of a substance is formed from its constituent elements in their standard states with measurements made under standard conditions of 298K and 1 atm.

    The measurement of enthalpy changes of chemical and physical processes is accomplished by calorimetry. The chemical or physical process is carried out on a precisely known scale in an insulated container called a calorimeter.
    The insulation prevents the flow of heat from the surroundings to the system (inside the calorimeter) ...

    Solution Summary

    The expert calculates the enthalpy of formation of calcium oxide. The solution explains each step and provides all mathematical steps.