A particulate diagram depicts the mixing of equal-volume aqueous solutions of and

CHEMISTRY · Single correct · AP · Chemistry · Chemical Reactions · Chemical Reactions

Problem

A particulate diagram depicts the mixing of equal-volume aqueous solutions of

\text{AgNO}_3

and

\text{NaCl}

. In the “before” boxes, isolated gray spheres (

\text{Ag}^+

) are paired with white tripods (

\text{NO}_3^-

) and light-blue spheres (

\text{Na}^+

) are paired with green spheres (

\text{Cl}^-

). In the “after” box, the gray and green species are aggregated into clusters that settle, whereas the white tripods and light-blue spheres remain uniformly dispersed in the water. Which anion present in the system acts as a spectator ion during the chemical change? (a)

\text{Cl}^-

(b)

\text{OH}^-

(c)

\text{NO}_3^-

(d)

\text{NO}_2^-

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