An ionic compound can be formed through the existence of valency above the compound e.g NH4 which have +3 as it's ionic charge
Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. Phenolphthalein is slightly soluble in water and usually is dissolved in alcohols for use in experiments.
Bc it’s the only group that distinguishes amino acids from one another’s
