I found this and it may answer your question.
water molecules pull apart the ammonium chloride lattice as a result of dipole - dipole interactions of the charged ions in the lattice in a reaction called hydration - the NH4Cl dissolves to yield [NH4]+ and [Cl]- ions
NH4Cl(s) ----> [NH4]+(aq) + [Cl]-(aq)
Explain how ammonium chloride, NH4Cl, is able to dissolve in water.
Dr.Bob where is the explanation?
3 answers
I might call them ion-dipole interactions, but othrer than that, Christina is right on!
what does it mean by lattice?