Asolution is formed when the solute uniformly disperses throughout (or dissolves in) the solvent. the process can be described by three steps:

1. separation of solvent-solvent particles (aka expanding the solvent),

2.separation of solute-solute particles (aka expanding the solute), and

3. formation of solute-solvent interactions.

classify the steps involved in the formation of a solution as being endothermic or exothermic.

a. step 1 is exothermic, step 2 is exothermic, step 3 is endothermic

b. step 1 is endothermic, step 2 is endothermic, step 3 is exothermic

c. step 1 is endothermic, step 2 is exothermic, step 3 is exothermic

d. step 1 is exothermic, step 2 is endothermic, step 3 is exothermic

B. Step 1 is endothermic, Step 2 is endothermic, Step 3 is exothermic

Explanation:

Prior to the formation of a solution, the solvent molecules attract each other as well as the solute molecules. For a dissolution to be effective, those interactions need to be weakened, at the same time that interaction between solute and solvent ought to be established. The formation of solute-solvent interactions is exothermic and provides the energy required to separate solvent-solvent particles and solute-solute particles, being both processes endothermic (the absorbed energy is used to break the interactions).

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.