Question

Identify the precipitate(s) formed when solutions of NH4Cl(aq), AgClO3(aq), and NaCl(aq) are mixed.

Answer 1

Both, ammonium and sodium, chlorides will precipitate silver cations in the form of AgCl:

NH₄Cl + AgClO₃ $\rightarrow$ AgCl$\downarrow$ + NH₄ClO₃;

NaCl + AgClO₃ $\rightarrow$ AgCl$\downarrow$ + NaClO₃.

However, in the excess of chlorides the AgCl precipitate will be dissolved:

AgCl + Cl^- $\rightarrow$ [AgCl₂]^-.