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← ScienceWhich outcome occurs when substantial quantities of calcium chloride are dissolved into water?
A)Solution temperature significantly increases✓
B)Water viscosity immediately decreases
C)Evaporation vapor pressure increases
D)Electrical pathway resistance decreases
💡 Explanation
Dissolving calcium chloride causes an exothermic reaction because the hydration energy released during **solvation** of ions exceeds the energy needed to break apart the crystal lattice. Therefore the solution heats up, rather than cooling due to endothermic processes like salt dissolving at low concentration.
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