During osmosis, the water molecules will keep moving across the semi-permeable membrane till a/an is reached.
A
lower concentration
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B
equilibrium
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C
higher concentration
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Solution
The correct option is B equilibrium Osmosis is the diffusion of water molecules across a semipermeable membrane from an area of lower solute concentration (i.e., higher concentration of water) to an area of higher solute concentration (i.e., lower concentration of water) till equilibrium is reached. There is no net movement of water molecules at equilibrium between the two systems. They just move back and forth in dynamic equilibrium.
a. Osmotic pressure is the external pressure required to be applied so that there is no net movement of solvent across the membrane.
b. Reverse Osmosis is a process where you demineralize or deionize water by pushing it under pressure through a semi-permeable Reverse Osmosis Membrane.
c. In Osmosis when equilibrium is reached, then water stops flowing across the membrane