The odor of a smelly shower drain can be eliminated by removing debris from the drain. Discarding the odor-causing material in the garbage outside the home ensures the smell does not invade other areas. Boiling water dissolves oils and grease deposited on the sides of the pipe in the drain, which add to the smell.
Luckily for us, Nernst derived an equation that allows us to determine at what point the two forces (chemical and electrical gradients) balance each other - in other words, at what point we have an ionic equilibrium.
Now we have the log of K, and notice that this is the equation we talked about in an earlier video. The standard cell potential E zero is equal to .0592 over n times the log of K. So just an interesting way to think about the Nernst equation. The Nernst equation is very useful for calculating cell potentials when you have different concentrations.