Kinetics - Graphs I

What does this graph show?
1. The energy changes in an elastic collision.
2. An endothermic reaction.
3. An exothermic reaction.
4. A reversable reaction.
What label should appear in area A?
1. Reactants.
2. Activated Complex.
3. Products.
4. Elements.
What label should appear in area B?
1. Reactants.
2. Activated Complex.
3. Products.
4. Elements or Compounds.
What is the enthalpy change for the reaction?
1. 0kJ
2. 17kJ
3. 25kJ
4. 42kJ
5. -42
6. -25
What does the arrow labelled 1. indicate?
1. Activation energy for the forward reaction.
2. Enthalpy change of the forward reaction.
3. Activation energy of the reverse reaction.
4. Enthalpy change of the reverse reaction.
What does the arrow labelled 2. indicate?
1. The activation energy for the forward reaction.
2. The enthalpy change of the forward reaction.
3. The activation energy of the reverse reaction.
4. The enthalpy change of the reverse reaction.
What arrow indicates the activation energy for the forward reaction? (Eactfwd)?
1. 3.
2. 4.
3. 5.
4. 6.
What arrow indicates the activation energy for the reverse reaction? (Eactrev)?
1. 3.
2. 4.
3. 5.
4. 6.
How would a catalyst alter the graph?
1. It would lower the line in area A.
2. It would raise the line in area A.
3. It would lower the line in area B
4. It would raise the line in area C.
If the area at B was some how made higher, what effect would this have on the reaction?
1. It would form different products.
2. More energy would be released overall, increasing the heat of reaction.
3. The reaction would be slower.
4. It would have no effect.

Kinetics - Graphs I

Multiple-choice exercise