Which of these is true regarding the dissolution of a salt (ionic solid) in water?

a. heat is absorbed or released during salt dissolution depending on the salt.
b. heat is released when a salt is dissolved in water.
c. heat is rarely absorbed when a salt is dissolved in water.
d. little or no temperature change accompanies salt dissolution in water.

Question

Which of these is true regarding the dissolution of a salt (ionic solid) in water?

a. heat is absorbed or released during salt dissolution depending on the salt.
b. heat is released when a salt is dissolved in water.
c. heat is rarely absorbed when a salt is dissolved in water.
d. little or no temperature change accompanies salt dissolution in water.

anonymous · Answer

what do you think? what happens when an ionic solid "disappears" in a solvent? how might the "reaction" enthalpy for separating an ionic solid depend on the ions and the solvent?