H2 and I2 are combined in a flask and allowed to react according to the reaction: H2(g) + I2(g) ⇌ 2 HI(g) Examine the figures (sequential in time) and answer the questions: a. Which figure represents the point at which equilibrium is reached?

Video transcript

Welcome back everyone in this example, we need to determine which of the below figures represents a chemical equilibrium. So let's recall that for a chemical equilibrium our concentration of our reactant are going to be decreasing and becoming constant, whereas our concentration of products will increase and will become constant. And this occurs at the same time as one another. So the best depiction of this would actually be our first image here as our final answer. And that is due to the fact that we can clearly see that our concentration of products are increasing at the same rate as our reactant are decreasing and they are both at a constant rate. So the first image is our final answer, which depicts a chemical equilibrium. So I hope that everything I reviewed was clear. If you have any questions, leave them down below and I will see everyone in the next practice video.