Question

Why heat of hydration of cation and anion is exothermic?

Answer 1

Heat of Hydration (Hhydration) vs Lattice Energy. The hydration step in the second reaction is always exothermic (Hhydration < 0) as H2O molecules are attracted into the electrostatic field of the ion. ... The value of Hsolution is dependent upon the magnitudes of Hhydration and Hlattice energy of the solute.

Answer 2

${\underline {\underline{\sf{Answer}}}} \:$

• Heat of Hydration (Hhydration) vs Lattice Energy.
• The hydration step in the second reaction is always exothermic (Hhydration < 0) as H2O molecules are attracted into the electrostatic field of the ion.
• The value of Hsolution is dependent upon the magnitudes of Hhydration and Hlattice energy of the solute.