Hess's Law Flashcards
1
Q
What does Hess’s law state?
A
That the enthalpy change of a reaction is independent of the path taken in converting reactants into products (provided conditions are the same)
2
Q
What does Hess’s law allow us to calculate?
A
Hess’s law allows us to calculate the enthalpy changes of formation that cannot be determined experimentally
3
Q
What is enthalpy change of formation?
A
When one mole of a substance is formed from its elements in their standard states
4
Q
What is enthalpy change of combustion?
A
When one mole of a substance is burned completely in oxygen
