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Solution


Q.

0.05M CuSO4 when treated with 0.01M K2Cr2O7 gives green colour solution of Cu2Cr2O7. The two solutions are separated as shown below:

[SPM: Semi Permeable Membrane]

Due to osmosis:                                                                                                                [2024]
1 Green colour formation observed on side X.  
2 Molarity of K2Cr2O7 solution is lowered.  
3 Green colour formation observed on side Y.  
4 Molarity of CuSO4 solution is lowered.  

Ans.

(4)

Solute particles do not move across SPM, so reaction between K2Cr2O7 and CuSO4 does not occur and green colour formation does not occur in either chamber. Net movement of solvent is from hypotonic (side X) to hypertonic (side Y) solution. Hence molarity of CuSO4 solution decreases.