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← ScienceWhich outcome accompanies increased agitator speed in crystallizer?
A)Reduced boundary layer concentration✓
B)Increased metastable zone width
C)Elevated nucleation energy barrier
D)Decreased solution supersaturation point
💡 Explanation
Enhanced agitation decreases the interfacial concentration via increased convective mass transfer, or boundary layer thinning, because more solute diffuses from crystal surfaces. Consequently, lower local concentrations reduce crystal growth suppression effects; therefore, a thinner layer occurs, rather than a broader metastable zone.
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