pH INDICATOR: ACETIC ACID &amp; SODIUM HYDROXIDE<br />
Titration Using Phenolphthalein Indicator<br />
NaOH(aq) is added to a solution of CH3COOH(aq) with phenolphthalein indicator. The indicator changes from clear to pink as the pH increases in the range of 8.2 to 9.8 due to the neutralization of acetic acid.