So I have a quick question about some concept I have watched in a video, it is illustrated as follows.
$$\ce{A + B <=> C + D}$$
So what the video is saying is that if you increase $\ce{A}$ then you get the products to increase and the $\ce{C + D}$ to increase as well.
My question is that shouldn't the products also depend on the $\ce{B}$ and not only just the $\ce{A}$. So to increase the products don't we need to increase both the reactants?
Here's the video for reference.
