CHEMISTRY · Single correct · AP · Chemistry · Chemical Reactions · Chemical Reactions
Problem
Two particulate representations are illustrated.
Diagram A (before mixing): Separate violet spheres (Ag+) and orange paired spheres (NO3−) in one region; separate yellow spheres (Cl−) and gray paired spheres (Na+) in another. After mixing: tightly packed clusters of alternating violet and yellow spheres settle to the bottom while gray and orange spheres move freely.
Diagram B (before mixing): Pink spheres (H+) closely associated with blue pairs (SO42−); green spheres (Ba2+) closely associated with brown pairs (OH−). After mixing: blue–green clusters dissolve, and all spheres move independently.
Which diagram(s) depict a precipitation reaction?
(a) Both Diagram A and Diagram B
(b) Only Diagram A
(c) Only Diagram B
(d) Neither Diagram A nor Diagram B