Engergetics Flashcards
1
Q
What is enthalpy change
A
heat energy transferred in a reaction at a constant pressure
2
Q
What is bond enthalpy
A
Energy needed to break bonds
3
Q
What is standard enthalpy of formation
A
The enthalpy change when one mole of a compound is formed from its elements under standard conditions
4
Q
What is standard enthalpy of combustion
A
The enthalpy change when 1 mol of a compound burns completely in oxygen under standard conditions
5
Q
What is the equation to calculate enthalpy change
A
Heat loss or gained= mass x SHC x temp change
6
Q
What is Hess’s law
A
The total enthalpy change of a reaction is independent of the route taken
7
Q
A
