Hi! An example of an isotonic concentration of solutes existing in two different solutions can be found in the medical field. When administering intravenous fluids to a patient, it is crucial to maintain an isotonic concentration to avoid damaging blood cells.
An isotonic solution, such as 0.9% saline (sodium chloride) solution, has the same concentration of solutes as human blood plasma. If a healthcare professional needs to provide fluids to a patient intravenously, they may use this isotonic saline solution. By doing so, they ensure that the concentration of solutes inside and outside the blood cells remains balanced, preventing cell damage due to osmotic pressure differences.