Sodium chloride can easily dissolve in water because

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The question asks why sodium chloride dissolves readily in water. 
Option 1: 'water is polar, and sodium (Na+) and chloride (Cl-) are charged (ions).' This is correct because water's polarity allows it to stabilize charged ions; the partially negative oxygen surrounds Na+ or Cl- and helps separate the lattice, leading to dissolution. The ion-dipole interactions between water molecules and the ions are energetically favorable, overcoming the ionic lattice energy.
Option 2: 'sodium chloride can avoid water by folding inwards on itself.' This is incorrect and nonsensical in the context of dissolution; crystalline salts don’t fold or hide from solvent—dissolution involves interaction with solvent particles rather than self-association.
Option 3: 'the water forms covalent bonds with the sodium and chloride ions.' Water does not form covalent bonds with ions in this process. It forms ion-dipole interactions and hydration shells around individual ions, which are weaker than covalent bonds.
Option 4: 'water and sodium chloride are hydrophobic.' This is factually wrong: water is not hydrophobic; and sodium chloride is a salt that readily interacts with water. The statement contradicts the known properties of water and ionic solutes and would not explain dissolution.

AGRI10050_2025_SM1 Mega progress quiz Part 1 (W2-W4)

Sodium chloride can easily dissolve in water because

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