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Physical chemistry (solvation): Why is water a particularly good solvent for ionic salts? Base your choice on the molecular property of H₂O that stabilizes ions in solution. Choose the correct reason.

Difficulty: Easy

Correct Answer: It has a high dipole moment

Explanation:


Given data

  • Property of water that explains dissolution of ionic solids.


Concept/Approach
Water is a highly polar molecule with a large dipole moment. This strong polarity creates ion–dipole interactions that stabilize separated cations and anions, lowering the free energy of dissolution.


Step-by-step reasoning
• Ionic crystal → ions held by lattice energy. • In water, ion–dipole attractions (Hδ⁺ to anions, Oδ⁻ to cations) hydrate the ions. • Hydration energy counteracts lattice energy → salt dissolves.


Final Answer
It has a high dipole moment

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