When a particular solid begins to dissolve in water,the temperature rises dramatically.For the dissolving of this solid in pure water A)ΔH_soln is always negative and ΔS_soln may be negative or positive. B)ΔH_soln is always negative and ΔS_soln is always positive. C)ΔH_soln is always positive and ΔS_soln may be negative or positive. D)ΔH_soln is always positive and ΔS_soln is always positive.

Question

Quizplus · Accepted Answer

When the temperature rises dramatically during the dissolution of a solid in water, it indicates an exothermic process, meaning ΔHsoln is negative because heat is released. The change in entropy (ΔSsoln) can be either negative or positive depending on the nature of the solid and solvent, and how their structures change upon dissolution.

When a Particular Solid Begins to Dissolve in Water,the Temperature