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> Enthalpy change for a single reaction (Hess' law)
Enthalpy change for a single reaction (Hess' law)
Formula
DeltaHreaction
enthalpy change for a reaction
DeltaHfproducts
total heat of formation of the products
DeltaHfreactants
total heat of formation of the reactants
Formula description
Hess`s law states that the energy change for any chemical or physical process is path independent, only the initial and final states being of importance. This path independence is true for all state functions. And the enthalpy changes are additive.
Calculator (
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DeltaHfproducts
joule per mole
kilogram square meter per mole per second squared
DeltaHfreactants
joule per mole
kilogram square meter per mole per second squared
DeltaHreaction
joule per mole
kilogram square meter per mole per second squared
Precision
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9
Formula code
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DeltaHreaction = DeltaHfproducts-DeltaHfreactants
DeltaHreaction = DeltaHfproducts-DeltaHfreactants
DeltaHreaction = DeltaHfproducts-DeltaHfreactants
DeltaHreaction = DeltaHfproducts-DeltaHfreactants
DeltaHreaction = DeltaHfproducts-DeltaHfreactants
\Delta H_{reaction} = \Delta H_{f(products)} - \Delta H_{f(reactants)}
$DeltaHreaction = $DeltaHfproducts-$DeltaHfreactants
References
Wikipedia: enthalpy change for a single reaction (Hess`law).
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