Correct option (b) 10.0 membrane bar
Explanation:
Whiten x Suppose x m1 H2O is transferred from aqueous solution of KCI to aqueous solution of Alcl3 then the phenomenon osmosis stops. So morality of soluble particles in both solutions becomes equal at this time.
M1 = modality of kcl solution
M2 = modality of kcl solution when x ml water is reduced. M1 V1 = M2 V2
0.2 x 2000 = M2 x (2000 x)
:. M2 = 400/2000 X
Similarly volume of Alcl3 Solution increases by addition of x m1 H2O.
morality of Alcl3 solution = 600/2000 + X
Now morality soluble particles in kcl solution = morality of soluble particles in Alcl3 soln.