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What would be the direction of flow of water through a semi-permeable membrane separating a 0.200...

What would be the direction of flow of water through a semi-permeable membrane separating a 0.200 M solution of KCl and a 0.100 M solution of Mg(NO3)2 ? Explain your reasoning.

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Expert Solution

KCl (aq.) ---------> K+ (aq.) + Cl- (aq.)

0.200                     0.200         0.200 M

Total concentration of particles in the solution = 0.200 + 0.200 = 0.400 M

Mg(NO3)2 (aq.) ----------> Mg2+ (aq.) + 2 NO3- (aq.)

0.100                               0.100             2(0.100)

Total concentration of particles in the solution = 0.100 + 2 (0.100) = 0.300 M

So, overall concentraion of solute particles in KCl is more than that of in Mg(NO3)2 .

Solvent will always flow from low concentrated solution to high concentrated solution. And hence water flow from Mg(NO3)2 solution to Kl solution.

queen_honey_blossom answered 2 years ago
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