Question

Which indicator is suitable for titration of $\mathrm{HCl}\mathrm{and}\mathrm{NaOH}$?

Answer 1

• Titration is a chemical technique used to determine the concentration of a given analyte in a mixture.
• Titration of $\mathrm{HCl}\mathrm{and}\mathrm{NaOH}$ is an example of acid-base titration, which proceeds through neutralisation.
• To determine end point of a titration, indicators are used depending upon what is the strength of acid and base used.
• Both $\mathrm{HCl}\mathrm{and}\mathrm{NaOH}$ being strong acid and strong base respectively, an indicator like phenolphthalein can be used which becomes colourless in acidic and neutral conditions and pink coloured under alkaline conditions.