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← ScienceWhich consequence results when deionized water contacts magnesium chloride?
A)Significant exothermic heat release✓
B)Spontaneous magnesium metal precipitation
C)Formation of a covalent complex
D)Passivation via oxide layer growth
💡 Explanation
Dissolving magnesium chloride releases considerable heat, because **hydration enthalpy** overcomes the **lattice energy**, therefore significant heat evolves rather than precipitation or complex formation; these require additional energy or specific redox conditions.
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