6E Standard Enthalpy Change Of Formation And Hess's Law Flashcards
1
Q
what is meant by Standard Enthalpy Change Of Formation
A
it is the enthalpy change measured at 100kPa and a stated temperature usually 298k, where one mole of a substance is formed from its elements in their standard state
2
Q
what is Hess’s law
A
the law states that the enthalpy change of a reaction is independent of the path it takes to convert reactants into products, provided that the initial and final conditions are the same in each case
