For the Process of Dissolving a Solid in a Liquid,which

Multiple Choice

For the process of dissolving a solid in a liquid,which of the following statements is true?

A) ΔH_soln is always negative and ΔS_soln is usually positive.
B) ΔH_soln is always positive and ΔS_soln is usually negative.
C) ΔH_soln is either positive or negative and ΔS_soln is usually positive.
D) ΔH_soln is either positive or negative and ΔS_soln is usually negative.