X3Y2 (i = 5) when reacted with A2B3 (i = 5) in aqueous solution gives brown colour. These are separated by a semipermeable membrane AB as shown. Due to osmosis there is:
Brown colour formation in side X
Brown colour formation in side Y
Formation in both of the sides X and Y
No brown colour formation
Only solvent molecules can passed through SPM so only dilution is possible.