Practice!

Sample Problem

During the dissolving process, which of the following steps require(s) energy?

The bond-breaking step of solute particles.

The bond-forming step between solute and solvent particles.

The distribution step where the cluster of solute and solvent particles are distributed evenly throughout the mixture

The overall dissolving process

Solution

The bond-breaking step and the distribution step require energy. The bond-forming step releases energy. The overall dissolving process might require energy or it might release energy, depending on the energy required or released in each step.