Sodium chloride can easily dissolve in water because

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BlackTom AI · Accepted Answer

To address why sodium chloride dissolves easily in water, we must evaluate each option in light of solubility principles.
Option 1: 'water is polar, and sodium (Na+) and chloride (Cl-) are charged (ions).' This is the correct reasoning. Water's polarity creates partial charges on H and O, enabling interactions with charged ions; the ionic Na+ and Cl- are surrounded by water molecules (hydration), which stabilizes them in solution and drives dissolution.
Option 2: 'water and sodium chloride are hydrophobic.' This is inaccurate: neither water nor common table salt is hydrophobic; in fact, water is polar and dissolves many ionic compounds, making this claim incompatible with observed behavior of NaCl dissolving readily.
Option 3: 'sodium chloride can avoid water by folding inwards on itself.' This describes a curb or collapsed behavior unrelated to dissolution. It contradicts the fundamental process of dissolution, which requires interaction with the solvent, not avoidance.
Option 4: 'the water forms covalent bonds with the sodium and chloride ions.' Water does not form covalent bonds with ions in this context; instead, it stabilizes ions through electrostatic interactions (ion-dipole interactions) and hydrogen bonding with surrounding water molecules. Covalent bonding terminology misrepresents the actual mechanism of dissolution for ionic salts in water.

AGRI10050_2025_SM1 W2 Progress Quiz - Molecular building blocks

Sodium chloride can easily dissolve in water because

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