What will happen by osmosis?

Due to this difference in concentration, there is a net movement of water molecules from the area of higher water concentration (inside the cell) to the area of lower water concentration (outside the cell).

Osmosis is a natural process that occurs when two solutions with different concentrations of solutes are separated by a semi-permeable membrane.

This movement of water is driven by the tendency for water molecules to move from regions of higher to lower concentration, a principle known as diffusion.

In the case of osmosis, the semi-permeable membrane allows water molecules to pass through but restricts the passage of solutes, leading to a net transfer of water from the cell to the solution.

In the context of placing a red blood cell in a hypertonic solution, the cell membrane serves as this semi-permeable barrier.