What will happen to blood cells place in the stailed water?

Answer 1

Your question is confusing, did you mean "distilled" water?

Your body & cells live and function not in a pure water environment, but water with several electrolytes in specific concentrations: sodium, potassium, calcium, chloride and several others.

If you placed red blood cells into pure water (distilled water) that did not have any of the electrolytes mentioned above, the distilled water would enter the blood cells through the process of osmosis.

The basic idea of osmosis is that if there is a chemical gradient and a permeable membrane separating this gradient, there will be a transfer of water trying to reach an equillibrium.

The solution in your red blood cells would be hyperosmotic compared to the distilled water. The cell membranes are semi-permeable, and would allow some of the distilled water to enter the cell, trying to balance the osmolarity.

The effect would be that the red blood cells would swell with distilled water and likely burst--like an over-filled water balloon.

If enough red blood cells were to pop, they could release enough electrolytes into the distilled water to keep other red blood cells from swelling and popping.