Question

Separation of solute molecules from one another and separation of solvent molecules from one another requires an input of energy to overcome intermolecular attractions. This process can be described as:
a.Separation energy
b.Heat of solvation
c.Endothermic
d.Exothermic e.Heat of solution

Answer 1

Heat of solvation - when 1 mol of solid is dissolved in solvent, energy is released during the process is called heat of solvation.

Separation energy - Energy needed to separate neutron & proton from the atoms is called separation energy

Step 1

Endothermic - the energy required to separate solvent molecules from one another (H1)

Step 2

Endothermic - the energy required to separate solute molecules from one another (H2)

Step 3

Exothermic - when the solvent and solute molecules are mixed, the energy is released called Exothermic (H3)

Heat of solution = H1 + H2 + H3

Usually heat of solution is an exothermic process.

For the given problem only states about step 1 and step 2.

These two process are endothermic.

Option C is the correct answer