No because you can't get the vinegar back to it's original state because some of the bacteria has gone inside the milk
Nope... The vinegar dissolves the calcium in the egg-shell - leaving behind the inner membrane surrounding the albumen and yolk. It is an irreversible reaction.
Reversible changes mean that i.e. if you make a chocolate sweet/lolly pop etc.. you can melt it back and make another one. Irreversible changes mean that i.e. if you crack an egg and it burns, you can not turn back into a raw egg in an unbroken shell again.
Physical
firstly they fizz. after 3 days a paste forms on top of the shell parts that are out of the vinegar, and around the liquid level of the bowl. we removed the shells from the vinegar and compared them with untouched shells. the vinegar shells were crumbly. we could break them with our hands, compared to the untouched shells which were still hard and shattered when dropped on the ground.
When you put vinegar in a naked egg the shell will decrease its shell then turning into a smelly egg
eggshells (solute) vinegar (solvent)
99 % of the shell is dissolved.
White vinegar is the best liquid for making an egg shell rubbery. The vinegar must be changed daily to prevent mold from growing on the egg shell.
If it is already boiled nothing will really happen except vinegar eating it up. If it was a raw egg with the shell intact, the vinegar will dissolve the shell and you can watch the proteins get denatured.
The acid in the vinegar
Mixing soy sauce with vinegar will thin the soy sauce, and give the sauce a strong vinegary flavour, (depending on the amount of vinegar used).
Vinegar is acidic. An acid will dissolve (partially at least) the calcium of the shell.