Predict which intermolecular forces contribute the most to the dissolution of NaCl in water?
NaCl is an ionic solid. The Na+ and Cl− ions in NaCl are bonded through an electrostatic force of attraction commonly known as the ionic bond. Water is a polar solvent. The oxygen atom, being more electronegative, attracts the electron cloud toward itself. As the electron cloud is pulled by the oxygen atom, it carries a partial negative charge, and the hydrogen atoms carry a partial positive charge. This partial separation of charges in the water molecule makes it polar. Predict which intermolecular forces contribute the most to the dissolution of NaCl in water.
Homework Answers
Answer: Ion-dipole forces
NaCl is an ionic solid. Na+ and Cl− ions are held together by an electrostatic force known as an ion-ion force. A water molecule is polar, and it shows hydrogen bonding. However, the dissolution of NaCl in water occurs as a result of the interaction of Na+ and Cl− with water dipoles.
The negative dipole of water attracts Na+ ions and the positive dipole attracts Cl− ions. Thus, an ion-dipole intermolecular force exists between NaCl and water molecules. Ion-dipole forces play an important role in the dissolution of NaCl in water.
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Predict which intermolecular forces contribute the most to the dissolution of NaCl in water?
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