rate of reaction Flashcards
1
Q
what is enthalpy a measure of?
A
chemical potential energy
2
Q
how to calculate enthalpy change?
A
products-reactants
3
Q
what is the activation energy?
A
how much energy from reactants to top of the hill
barrier to overcome before it proceeds
4
Q
what must happen for a collision to be successful?
A
particles must collide with energy equal or greater than the activation energy
5
Q
what happens at the peak a graph?
A
unstable intermediate called the activated complex is formed
old bonds breaking new bonds formed
6
Q
what does it mean if product is lower than product?
A
need to take in energy=endothermic
