Which formula can be used to calculate the enthalpy of solution?

ΔH of solution = ΔH₁ + ΔH₂ + ΔH₃

Explanation:

The formation of the solution goes through 3 steps:

1- The dissociation of the solute A particles, solute breaks apart the intermolecular forces holding the molecules together. It has ΔH₁ > 0 beause this is an endothermic process.

2- The dissociation of the solvent B particles, solute breaks apart the intermolecular forces holding the molecules together. It has ΔH₂ > 0 because this is an endothermic process.

3- The particles of the solvent and solute are holding together.  It has ΔH₃ < 0 because this is an exothermic process.

answer; i believe the correct answer is (solid gold);

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.