A particle-level description shows that

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Electric Force Field and Potential · Electric Force Field and Potential

Problem

A particle-level description shows that, before reaction, an aqueous mixture contains 4

\mathrm{Al^{3+}}

, 12

\mathrm{OH^{-}}

, 4

\mathrm{NH_{4}^{+}}

, and 4

\mathrm{Cl^{-}}

ions. After reaction, a gelatinous precipitate has removed all

\mathrm{Al^{3+}}

ions together with 12

\mathrm{OH^{-}}

ions, leaving 4

\mathrm{NH_{4}^{+}}

and 4

\mathrm{Cl^{-}}

ions in solution. Describe how this information demonstrates conservation of electric charge in the reaction.