Enthalpy Flashcards
1
Q
Do endothermic reactions produce a negative or positive ∆H?
A
positive
2
Q
Do exothermic reactions produce a negative or positive ∆H?
A
negative
3
Q
What does ∆H॰ stand for?
A
Represents an enthalpy change occurring at STP.
4
Q
What is STP?
A
Standard Temperature and Pressure. 25॰C and 101.3kPA/1atm
5
Q
What does ∆Hf॰ represent?
A
Represents the enthalpy change for formation reaction.
6
Q
What is a formation reaction?
A
A reaction in which one mole of a compound is made from its elements, with all chemicals in standard states.
7
Q
What does ∆Hc represent?
A
The enthalpy change for combustion reactions. May be stated as the heat of combustion.
8
Q
A
