Energy Diagram Module Series- Part Four: Practice Quiz

Posted on August 19th, 2013

This is the final part of a four part series in the Energy Diagram Module.

Click on the following link to see earlier parts:

Part 1

Part 2

Part 3


For each of the following questions- choose the best answer among the four answer choices.

Scroll to the bottom to see the answer key.



The net amount of heat released from the formation of products in a reaction is represented by _______________.

A) Temperature

B) Activation Energy

C) Heat of Reaction

D) Entropy


Question 2

A transition state represents _______________.

A) The highest potential energy molecule of the mechanism

B) The lowest potential energy molecule of the mechanism

C) The a molecule that does not occur in the reaction

D) A new reactant introduced to the reaction.


Question 3

A high energy, sometimes isolatable, chemical species during the course of reactants to products is referred to as a _______________.

A) Product

B) Midpoint

C) Transition State

D) Intermediate


Question 4

Refer to the Gibbs Free Energy Equation

ΔG0 = ΔH0 – TΔS

Under which circumstance will DG0 ­NEVER be spontaneous. (Hint: spontaneous reactions have a negative ΔG0)

A) ΔH0 < 0 and ΔS < 0

 ΔH0 > 0 and ΔS < 0

C) ΔH0 > 0 and ΔS > 0

D) ΔH0 < 0 and ΔS > 0





1. C

2. A

3. C

4. B