Question

what is the solute solvent interactions of NaBr in water

HCl in acentonitrile &

CF4 in hexane

Answer 1

1. interactions of NaBr in water

Ion-Dipole Interactions

Another common example of these forces at work is an ion-dipole interaction, which arises when water solvates ions in solution. This interaction arises most prevalently when strong or weak electrolytes are place in water. Consider the dissolution of table salt (sodium chloride) in water:

NaBr(s)→Na+(aq)+Br−(aq)

The water molecules form a solvent cage around each Na⁺ or Br^- ion, as implied by the aqueous state symbol (aq) following each of the products. The positive ion, Na⁺, is surrounded by water molecules that have the negative dipoles of the water, or the oxygen, pointing towards the cation. .

When an ionic compound dissolves in water, the ions

overcome the forces holding them in the lattice.

become hydrated (surrounded by water).

Lattice energyLattice energy =E required to overcome the forces

holding the ions together in a crystal.