Question

In titration of the mixture to a methyl orange end point with standard NaOH, why does none of the NaOH is neutralized by the NH₄Cl

Answer 1

 NH4Cl is formed from the reaction of NH3, a weak base, and HCl, a strong acid. The chloride ion will not hydrolyze. However, the ammonium ion is the conjugate acid of NH3 and will react with water, producing hydronium ions.Nh4cl act as acid and Naoh is a base. so it is a acid base neutralysation reaction forming Nacl , H2o and Nh3.On the other hand sodium hydroxide, as a strong base, and its salt does not cause water hydrolysis.