InterviewSolution
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InterviewSolution
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`CNS^(ө)` ions give red colour with `Fe^(3+)` ions in aqueous solution as: `Fe^(3+)(aq) + 3CNS^(ө)(aq) rarr Feunderset("red")((CNS))_(3)(aq) ` If `0.1 M` `KCNS` solution is separated from `0.1 M FeCl_(3)` solution by means of a semi-permeable membrane, red colour will appear on: a.`FeCl_(3)` soluion , b. `KCNS` solution side , c. Both sides , d. Neither side |
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Answer» d. `Fe^(3+)(aq) + 3CNS^(ө)(aq) rarr Feunderset("Red")((CNS))_(3)(aq)` `rArr` Only solvent molecules moves from dilute solution to concentrated solution. `{:(underset("(Dilute)")(underset(C_("effective")=0.2 M)(0.1MKCNS)),,,underset(C_("Concentrated"))underset(C_("effective")=0.2M)(0.1MFeCl_(3))):}` So , no red color will appear. |
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