Chemical equilibria

What you'll learn

1. 1

   Imagine a dance floor at a party 💃🕺. People move from one side to the other, but the total number on the floor stays the same.

2. 2

   Here's a simple reaction: A ⇌ B. At the start, only A is on the dance floor. Over time, some A turns into B, and some B turns back into A.

3. 3

   At equilibrium, which of these is true?

4. 4

   Let's look at N₂O₄(g) ⇌ 2NO₂(g). At equilibrium, [N₂O₄] = 0.1 M and [NO₂] = 0.2 M. What is the equilibrium constant Kc?

5. 5

   Drag the slider to change the temperature. See how the amounts of A and B change at equilibrium.

6. 6

   If a reaction is exothermic in the forward direction, what happens when you heat it up?

7. 7

   What is the Kc expression for the reaction: 2A + B ⇌ 3C?