Dissolving a solid always leads to increase in disorder to be explained.
Solids: One of the four fundamental states of matter is solids. The solids are said to be closely packed and is characterized by structural rigidity and conflict to changes of shape or volume. Just as liquid, a solid object does not take the shape of its container on its flow, nor does expand to fill the entire volume as gas. The atoms are tightly bound to each other, either in regular shape or in irregular shape. The compression of solids doesn’t take place with small amount of pressure whereas gases can be compressed with modest pressure because in gases molecules are sparingly packed.