Why mixing an acid or base with water results in the decrease of ions(H30+/OH-)per unit volume???

Why mixing an acid or base with water results in the decrease of ions(

1.	Why mixing an acid or base with water results in the decrease of ions(H30+/OH-)per unit volume???
Answer» Adding acids or bases in water is called dilution, it lowers the concentration of acids thus nullifies it\'s effect. As more water is added more ions dissociates and gets diffused with air in the form of gas, hence such a phenomenon occurs.