FeCl 3 on reaction with K 4 [ Fe ( CN ) 6 ] in aqueous solution gives blue colour. These are separated by a semipermeable membrane AB as shown. Due to osmosis there is-

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FeCl 3 ​ on reaction with K 4 ​ [ Fe ( CN ) 6 ​ ] in aqueous solution gives blue colour. These are separated by a semipermeable membrane AB as shown. Due to osmosis there is-

TestHub · Accepted Answer

A semipermeable membrane (SPM) allows only solvent molecules (water) to pass through it. Solute particles and complex ions like F e 3 + and [ F e ( CN ) 6 ​ ] 4 − cannot pass through the SPM. Because these reacting ions are blocked, they cannot meet or interact with each other. Since no chemical reaction takes place between the sides, no Prussian blue color is formed anywhere.

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