Wize University Chemistry Textbook > Equilibrium
Concentration-Time Graphs

Concentration vs Time Graphs
N2(g) + 3H2(g) ⇌ 2NH3(g)
What would the concentration vs time graph look like if we started with our reactants?

We end up with flat lines because at equilibrium, the relative concentrations of reactants and products don't change!
Practice: Concentration vs Time Graphs
Use the following reaction to answer the following questions:
2 SO2(g) + O2(g) ⇌ 2 SO3(g)
Below is a concentration-time graph..

Mark Yourself Question
- Grab a piece of paper and try this problem yourself.
- When you're done, check the "I have answered this question" box below.
- View the solution and report whether you got it right or wrong.
Using the concentration-time graph from part 2, draw out the concentration-time graph for the reaction in the opposite direction. If the environment, system, and total mass remain the same, should the equilibrium concentrations of our reactants and products in the opposite direction be the same as the ones shown below?
