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← ScienceWhich outcome occurs when highly concentrated ionic solutions experience evaporative drying?
A)Supersaturation exceeds nucleation energy barrier✓
B)Solubility increases exponentially beyond saturation
C)Ionic mobility remains perfectly constant
D)Viscosity decreases; diffusion becomes homogeneous
💡 Explanation
Crystal formation results because, as solvent evaporates, the ionic concentration rises to a point of supersaturation. Above the *nucleation energy barrier*, crystal growth becomes thermodynamically favourable, therefore crystallization occurs rather than maintaining a stable solution.
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