MadSci Network: Chemistry
Query:

Re: Which liquid will disolve an eggshell the fastest? Orange Juice, vinager, o

Date: Mon Jan 8 19:03:16 2001
Posted By: Lynn Bry, MD/PhD, Department of Pathology, Brigham & Women's Hospital, Harvard Medical School
Area of science: Chemistry
ID: 978983633.Ch
Message:

Hi Stephanie - The best way to find out is to try the experiment yourself! I'd recommend using at least 3 eggs for each solution you try - place each one in its own container, and make certain you have the same *volume* of liquid in each container. You should also cover the containers so the liquid doesn't evaporate. Make certain to keep 3 eggs separate that you do not expose to any liquid - these eggs will server as your *control*, or basis of comparison. Check each of the eggs for a series of time periods after they are immersed in the liquids - 3, 6, 12 and 24 hours might be a good initial start.

You might also consider placing eggs in the following liquids to see their effect on the dissolving of the eggshell:

How do the eggs in these solutions compare to the ones placed in vinegar or O.J.?

Another thing to try: take the pH of each solution before you place the eggs in it, then take the pH at each time point you note the effects on the egg shell. Once again, you'll need a control for the experiments, which in this case will be an equal volume of the solution *without* an egg in it. What happens to the pH over time, and how does it relate to any effects on the eggshell? You can puchase pH paper or pH "dipsticks" from most pharmacies.

Hope this helps..

Lynn Bry, MadSci Admin


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