Question

When NaCl dissolves in water, aqueous Na+ and Cl- ions result. The force of attraction that exists between Na+ and H2O is called a(n) ________ interaction.

Answer 1

Explanation:

Polarity is defined as the development of partial charges on the atoms of a molecule. In a water molecule, there are hydrogen and oxygen atoms.

Due to the difference in electronegativity of both hydrogen and oxygen atom there is development of partial positive charge on hydrogen atom and a partial negative charge on oxygen atom.

Dipole-dipole interactions are defined as the interactions that occur when partial positive charge on an atom is attracted by partial negative charge on another atom.

So, when $Na^{+}$ is attracted towards $H_{2}O$ then this attraction is due to dipole-dipole interaction taking place between the sodium ion and water molecules.

Thus, we can conclude that when NaCl dissolves in water, aqueous $Na^{+}$ and $Cl^{-}$ ions result. The force of attraction that exists between $Na^{+}$ and $H_{2}O$ is called a dipole-dipole interaction.