You will see tiny bubbles on the eggshell.The eggswill have very small bubbles, barely noticeable, attached to the surface of the shell. If left long enough, a sticky substance may form on the eggshell, but it is unlikely that the shell will dissolve completely in 24 hours.

The principle is: the main component of the eggshell is calcium carbonate.Acetic acidis the main component of vinegar. Acetic acid can react with calcium carbonate to produce carbon dioxide.The ion equation is: carbonate ion reacts with hydrogen ions to form water and carbon dioxide.

This principle can be applied in real life for removing scale.