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Which outcome reduces the conductivity of molten NaCl?

A)Ion-pair association
B)Increased ion mobility
C)Reduced melt viscosity
D)Higher applied voltage

💡 Explanation

Ion-pair association reduces conductivity because it diminishes the number of charge carriers available despite the high temperature of the melt. Association decreases conductivity, rather than increasing it through higher ion mobility, therefore conductivity lowers.

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