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← ScienceWhich mechanism reduces the melting point of ice when salt (NaCl) is added?
A)Colligative property: freezing point depression✓
B)Increased hydrogen bond network strength
C)Decreased translational kinetic energy
D)Exothermic dissolution heat addition
💡 Explanation
Salt lowers ice's melting point because colligative properties disrupt ice lattice formation via freezing point depression. The sodium and chloride ions interfere with hydrogen bonding, therefore melting requires less energy, rather than other thermal or energy changes alone causing the melting.
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