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← ScienceWhich outcome occurs when exceeding an impeller's critical Reynolds number?
A)Increased mixing time and inefficiency✓
B)Decreased shear stress on reactants
C)Laminar flow patterns are strengthened
D)Reduced energy dissipation as heat
💡 Explanation
Exceeding a Reynolds number signifies laminar-to-turbulent transition, causing increased mixing time because turbulent eddies dissipate kinetic energy, rather than maintaining efficient material transport; therefore inefficiency rises instead of shear alteration at the reaction boundary, due to turbulence.
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