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← ScienceWhich outcome results when excessive charge accumulates on electrostatically stabilized colloidal dispersion?
A)Ionic repulsion overcomes Van der Waals✓
B)Increased zeta potential stabilizes particles
C)Brownian motion diminishes sedimentation velocity
D)Solvent viscosity reduces kinetic energy
💡 Explanation
When charge builds up excessively, ionic repulsion dominates the attractive van der Waals forces, causing flocculation to destabilize the colloidal system, because the electrostatic stabilization is compromised, rather than stabilizing via increased zeta potential; therefore, A is right.
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