The question above can be solved by using this equation: CAVA =CBVB Where: CA =Concentration of acid = 1.0 M VA = Volume of acid = ? CB = Concentration of base = 1.0 M VB = Volume of base = 25 ml VA = CBVB / CA VA = [1 * 25] / 1 = 25 / 1 = 25 VA = 25 ml Therefore, the volume of acid that is required to completely neutralize the base is 25 ml.