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Ideas of Hess's Cycles
Hess's law is the first law of thermodynamic.
This is were the enthalpy change of a reaction is independent of the reaction route Achieved.
Combustion Data in standard conditions
The standard enthalpy change of combustion is when one mole of a substance is completely burned
Formation Data in standard conditions
The standards enthalpy change of formation is when one mole of a compound is fromed from its
reactants in standard state.
Reaction Data In Standard Conditions
This is the Standard enthalpy change of a reaction when the molar quantities of the reactants react
in standard states.
Enthalpy Change model
Combustion data arrows point downwards
Formation data arrows point upwards.