Hess Law Flashcards
1
Q
What is hess law?
A
Overall enthalpy change of a reaction is the same independent of the route taken
2
Q
How to work out ΔH1?
A
ΔHr2+ ΔHr3
3
Q
How to work out ΔH2?
A
ΔH1-ΔH3
4
Q
How to work out ΔH3?
A
ΔH1-ΔH2
5
Q
Which way do the arrows go for combustion?
A
Down
6
Q
Which way do the arrows go for formation?
A
Upwards
7
Q
What’s the sign if the arrows are the wrong way?
A
+
