Potential Energy Flashcards
1
Q
In Exothermic reactions the (delta) H value is…
A
-ve as energy has been released from the system.
Products have less energy than reactants.
2
Q
In Endothermic reactions the (delta) H value is…
A
+ve as energy has been taken in by the system.
Products have more energy than reactants.
3
Q
In a reaction a catalyst…
A
Decreases the minimum activation energy required as it provides an alternate pathway.
Catalysts do not affect the (delta) H.
Helps to for, the activated complex by providing a better collision geometry by fixing the molecules in place.
