Question

What type of intermolecular force is present between magnesium chloride and water?

• A. Dipole-dipole interaction
• B. Ion-dipole interaction
• C. Dipole-induced dipole interaction
• D. Hydrogen bonding

Hint:

Ion-dipole interactions occur when an ionic compound dissolves in a polar solvent like water. The ions interact with the dipole of the water molecules.

Answer 1

The Correct Option is B

Step 1: Understanding the interactions.
Magnesium chloride (MgCl\(_2\)) is an ionic compound, and when it dissolves in water, it dissociates into Mg\(^{2+}\) and Cl\(^-\) ions. The interaction between these ions and the polar water molecules is called ion-dipole interaction.

Step 2: Analyzing the options.
(A) Dipole-dipole interaction: This occurs between two polar molecules, but this is not the case here since we are dealing with ions and water.
(B) Ion-dipole interaction: This is the correct answer, as it describes the interaction between ions and the polar water molecules.
(C) Dipole-induced dipole interaction: This type of interaction occurs between a polar molecule and a nonpolar molecule, which is not the case here.
(D) Hydrogen bonding: Although water can form hydrogen bonds, it is not the primary interaction in this case because we are dealing with ions.

Step 3: Conclusion.
The correct answer is (B) Ion-dipole interaction.