energetics definitions (phys I) Flashcards
1
Q
enthalpy change
A
the heat energy change measured under conditions of constant pressure
2
Q
enthalpy of formation
A
the enthalpy change when 1 mole of a compound is formed from its constituent elements under standard conditions, both reactants and products in their standard states
3
Q
the enthalpy change of combustion
A
the enthalpy change when 1 mole of a substance is completely burnt in excess oxygen under standard conditions, both reactants and products in their standard states
4
Q
A
5
Q
mean bond enthalpy
A
the enthlpy change needed to break the cov bonds of gaseous elements, ranged over a
