Which of the following solutions does not flo | vedclass

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(D) For two solutions to have no net flow across a semipermeable membrane,they must be isotonic,meaning their molar concentrations must be equal.$M_{u

Vedclass · Accepted Answer

$12 \ g$ urea $dm^{-3}$ and $36 \ g$ glucose $dm^{-3}$

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(D) For two solutions to have no net flow across a semipermeable membrane,they must be isotonic,meaning their molar concentrations must be equal.$M_{urea} = \frac{12 \ g / 60 \ g \ mol^{-1}}{1 \ dm^3} = 0.2 \ M$$M_{glucose} = \frac{36 \ g / 180 \ g \ mol^{-1}}{1 \ dm^3} = 0.2 \ M$Since the molar concentrations of urea and glucose in option $D$ are equal $(0.2 \ M)$,the osmotic pressures are equal $(\pi_1 = \pi_2)$.Therefore,no net flow of solvent occurs between these two solutions.

Which of the following solutions does not flow in either direction when separated by a semipermeable membrane? (Molar mass: glucose $= 180 \ g \ mol^{-1}$,urea $= 60 \ g \ mol^{-1}$)

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