Hess Law Flashcards
1
Q
What is hess law
A
enthalpy change for a reaction is independent of the route by which the reaction is achieved but depends only on the first and last stage
2
Q
delta HC
A
sum of Hf products - sum of Hf reactants (kg/mol)
almost always exothermic (negative)
3
Q
bond enthalpies
A
delta H = sum of bonds broken + sum of bonds formed
[reactants + products]
