The Heat of Solution
A)is Never Positive $(\Delta{H}^{\circ}_{soln} \leq 0)$ , Because the Solute-Solvent Attraction Is Never Weaker Than the

Multiple Choice

The heat of solution

A) is never positive $(\Delta{H}^{\circ}_{soln} \leq 0)$ , because the solute-solvent attraction is never weaker than the combination of the solute-solute attraction and solvent-solvent attraction.
B) is always positive $(\Delta{H}^{\circ}_{soln} > 0)$ , because the solute-solvent attraction is always weaker than the combination of the solute-solute attraction and solvent-solvent attraction.
C) is always zero ( $\Delta$ H ^$\circ$ _soln = 0) , because the solute-solvent attraction is defined as the average of the solute-solute attraction and solvent-solvent attraction.
D) is always negative $(\Delta{H}^{\circ}_{soln} < 0)$ , because the solute-solvent attraction is always stronger than the combination of the solute-solute attraction and solvent-solvent attraction.
E) may be positive, zero, or negative, depending on the relative strength of the solute-solvent, solute-solute, and solvent-solvent attractive forces.