U2-1 Flashcards
1
Q
define enthalpy change in combustion
A
when one mole of a substance is completely combusted in oxygen under standard conditions.
2
Q
define enthalpy change in formation
A
when one mole of a substance is formed from its constituent elements in their standard state under standard conditions.
3
Q
define enthalpy change in reaction
A
enthalpy change in a reaction between the number of moles in the reaction equation
4
Q
what is Hess’s law
A
total enthalpy change is independent of the route taken from reactants to products,
