MAY 14, 2016 07:51 PM PDT

The Chemistry Behind the Egg Shell and Vinegar Experiment


The egg shell in vinegar experiment demonstrates how calcium carbonate reacts with acetic acid. About 95 percent of an eggshell is made up of calcium carbonate. Other materials mostly made from calcium carbonate include seashells and limestone. The remaining 5 percent of the eggshell is made up of calcium phosphate, magnesium carbonate, and proteins.

About 3 percent of vinegar is acetic acid.

When you put an egg into a glass of vinegar, bubbles of carbon dioxide immediately begin to form around the entire egg. The egg shell dissolves within 24 hours, leaving behind a squishy bouncy translucent egg.

According to the Department of Physics at the University of Illinois at Urbana-Champaign, the chemical reaction behind this is such: CaCO3+ 2H+ -> Ca+2 + H2O +CO2
About the Author
  • Julianne (@JuliChiaet) covers health and medicine for LabRoots. Her work has been published in The Daily Beast, Scientific American, and MailOnline. While primarily a science journalist, she has also covered culture and Japanese organized crime. She is the New York Board Representative for the Asian American Journalists Association (AAJA). • To read more of her writing, or to send her a message, go to Jchiaet.com
You May Also Like
NOV 18, 2019
Space & Astronomy
NOV 18, 2019
Elon Musk Shows Off SpaceX's Shiny New Starship
If you’ve been paying any attention to SpaceX lately, then you’ve undoubtedly caught wind of the plethora of controlled launching and landing t...
NOV 18, 2019
Space & Astronomy
NOV 18, 2019
NASA's Dawn Mission Taught Us Much About the Asteroid Vesta
In 2011, NASA’s Dawn spacecraft arrived at its destination, enabling planetary scientists with the American space agency to study a particularly capt...
NOV 18, 2019
Space & Astronomy
NOV 18, 2019
Why the Search for Other Planets is So Captivating
Astronomers are continuously searching for other planets, whether those reside right here in the solar system with us, or far away in another stellar syste...
NOV 18, 2019
Cardiology
NOV 18, 2019
Protein Build-Up Places Heart at Risk
Amyloidosis is a disease caused by protein buildup in the body. These abnormal proteins, called amyloids, are produced in the bone marrow. Multiple types o...
NOV 18, 2019
Chemistry & Physics
NOV 18, 2019
Will Thorium Reactors Have a Future in Clean Energy?
In its pure form, thorium is a silver-black colored metal. Named after Thor, the hammer-wielding Norse god of thunder, it is the 90th element on the period...
NOV 18, 2019
Plants & Animals
NOV 18, 2019
Triggerfish Are Lobsters' Worst Enemies
Lobsters, just like many other animals, follow migration patterns. They are often observed traveling in large packs, marching in straight lines across the...
Loading Comments...