pH value Define: pl H=-log [f Deduction pKW=-log[1014=14 In water or neutral solution, pH=-log [10-7=7 In acidic solution, pH <7 In basic solution, pH>7 pOH=-log [oH-1 pH pOH=(-log [Hf]+(log [OH)=pKw=14 10pH value Define pH log [H+ z Define: pH = - log [H ] + z Deduction: „ pKw = - log [10-14] = 14 „ In water or neutral solution, pH = - log [10-7] = 7 „ In acidic solution pH < 7 In acidic solution, pH < 7 „ In basic solution, pH > 7 z pOH = - log [OH-] pH + pOH = ( log [H+]) + ( log [OH- „ pH + pOH = (- log [H ]) = pK = 14 +]) + (- log [OH-]) = pKw = 14 10