why didnt the egg in water burst due to too much of water entering the egg?
an egg was soak in vinegar for a few days to remove the shell. it was then soak in water. the egg increase in size after a few days because water entered the egg by osmosis. it was then left for a week but the egg did not burst.
I am assuming that you did this experiment with a raw egg. Soaking the egg in vinegar removes the calcium which makes the shell hard, leaving behind only the shell membrane. This effectively turns the egg into a natural osmometer.
When you placed the egg in water, the process of osmosis caused water to pass in through the membrane, which is why the egg increased in size. As water entered the egg, the turgor pressure inside the egg went up. At some point the turgor pressure, which tends to push water back out of the egg, equalized with the osmotic pressure, and a balance was achieved. That is why the egg did not burst.
The egg had already been boiled and it became harder inside. If you kept it for an hour nothing would happen except for the peel to come off.