Explain isotonic solutions.

(N/A) Two solutions having the same osmotic pressure at a given temperature are called isotonic solutions.
When such solutions are separated by a semipermeable membrane,no osmosis occurs between them.
For example,the osmotic pressure associated with the fluid inside the blood cell is equivalent to that of $0.9 \% \text{ (mass/volume) } NaCl$ solution,which is called normal saline solution and is safe to inject intravenously.
Hypertonic solution: $A$ solution that possesses higher osmotic pressure compared to another solution is known as a hypertonic solution.
For example: If we place cells in a solution containing more than $0.9 \% \text{ (mass/volume) } NaCl$,water will flow out of the cells and they will shrink.
Hypotonic solution: $A$ solution that possesses lower osmotic pressure compared to another solution is known as a hypotonic solution.
For example: If the salt concentration is less than $0.9 \% \text{ (mass/volume) } NaCl$,the solution is said to be hypotonic. In this case,water will flow into the cells,and they will swell.