4.5- ENTHALPY CHANGES OF COMBUSTION Flashcards
1
Q
What is the enthalpy change of combustion ΔcH°?
A
enthalpy change when one mole of substance completely burnt in oxygen under standard conditions
2
Q
Why is enthalpy change of formation of compounds often difficult/impossible to measure directly?
A
reactants often don’t react directly from compound that you’re interested in
