Potassium (K+)

Potassium (K+) is the most abundant intracellular cation and plays a vital role in the transmission of electrical impulses in cardiac and skeletal muscle.  It plays a role in acid base equilibrium.  In states of acidosis hydrogen with enter the cell as this happens it will force potassium out of the cell, a 0.1 decrease in pH will cause a 0.5 increase in K+.