Two solutions exerting the same osmotic pressure over a semipermeable barrier are said to be in an isotonic solution. Without affecting the concentration of solutes on either side, this condition enables unrestricted passage of water over the membrane.
<h2>What is osmosis?</h2>
The tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane.
