Question

define standard enthalpy of formation. write one suitable thermochemical equation to explain it

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Answer 1

Explanation:

• The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance from its constituent elements, with all substances in their standard states.
• Example of thermochemical equation is When methane gas is combusted, heat is released, making the reaction exothermic. In the process, 890.4 kJ is released and so it is written as a product of the reaction.