Yes, the pH of the solution will change. For an acid, it will increase and for a base, it will decrease
This is simply a measure of the acidity / alkalinity of a solution.
The pH measures the hydrogen ion concentration while the pOH measures the hydroxide ion concentration
Mathematically, it expressed as
pH = –Log [H⁺]
The molarity of Hydrogen ion [H⁺] is given by
Molarity of [H⁺]= mole of [H⁺] / Volume
From the formula, we can see that the molarity is inversely proportional to the volume.
Thus an increase in the volume will decrease the molarity of [H⁺]. This also will affect the pH.
However, it should be noted that as the pH increases, pOH decreases and as pH decreases, pOH increases.
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