Which step during the dissolving process releases energy?

A. Separating solute particles from one another
B. Separating solvent particles from one another
C. Adding solute into the solvent
D. Mixing the particles of solute with particles of solvent

Question

Which step during the dissolving process releases energy?

 		A.	Separating solute particles from one another
 		B.	Separating solvent particles from one another
 		C.	Adding solute into the solvent
 		D.	Mixing the particles of solute with particles of solvent

abb0t · Answer

When the solute particles move between the solvent particles the forces of attraction between solute and solvent. The molecules take hold and the particles "snap" back and move closer.

vera_ewing · Answer

@abb0t Its C right?

vera_ewing · Answer

@dtan5457 it's C right?

anonymous · Answer

I would go between C and D. But more to C.
That is because when adding solute into the solvent, it is always at a given height above the solvent and when this happens, pressure is applied to the liquid, thus releasing sound energy ( can be fizzing), which can subsequently release heat energy, which is a very common case for neutralization reaction. Therefore, these are the 2 basic types of energy.
In some other cases, there are reaction of adding solute into the solvent where explosive takes place, meaning, it releases nuclear/explosive energy.