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.
Note Rh is = 2.18 x 10-18 J. The negative arises because Bohr assumed that when the electron is removed from the atom the system would be defined as having zero energy. But when the electron is around the nucleus, the system is more stable and therefore, must be at a lower energy. Therefore, the negative sign. 'n' in the equation is a special number called a quantum number. It can only have integer values from 1 to infinity.