The solutions in the arms of the U-tube (below) are separated by a selectively permeable membrane that is permeable to water and solute A, but not to solute B. 40g of solute A and 20g of solute B have been added to the water on side 1 of the U-tube. 20g of solute A and 40g of solute B have been added to the water on side 2 of the U-tube. Assume that after a period of time, equilibrium is reached. How many grams of solute A will be in solution on side 1 of the U-tube? How many grams of solute A will be in solution on side 2 of the U-tube? Explain your answers to questions a & b How many grams of solute B will be in solution on side 1 of the U-tube? How many grams of solute B will be in solution on side 2 of the U-tube? Explain your answers to questions d & e. What has happened to the water level in the U-tube? Explain your answer.
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The solutions in the arms of the U-tube (at right) are separated by a selectively permeable membrane that is permeable to water and solute A, and also to solute B. 40g of solute A has been added to the water on one side of the U-tube. 20g of solute B has been added to the water side of the U-tube. What will happen to the solution on the other side of the U-tube? Explain. What will happen to the solution on the water side of the U-tube? Explain. At the start of the experiment, which side of the U-tube is hypotonic and which is hypertonic? Explain.
Sri K.
The solutions in the two arms of the U-tube above are separated by a membrane that is permeable to water and glucose but not to sucrose. Side A is half filled with a solution of 2 M sucrose and 1 M glucose. Side B is half filled with 1 M sucrose and 2 M glucose. Initially, the liquid levels on both sides are equal (i = 1 for sucrose and glucose; the temperature is 22°C). Initially, in terms of tonicity, what can you say about the solution in side A with respect to that in side B? Show this mathematically. ψ of side A = ψ glucose + ψ sucrose and ψ of side B = ψ glucose + ψ sucrose Remember ψ = -iCRT After the system in question 4 reaches equilibrium, what changes are observed with respect to the height of the water? Use the formula in question 4 to mathematically support your answer to question 5.
Adi S.
The solutions in the two arms of this U-tube are separated by a membrane that is permeable to water and glucose but not to sucrose. A. Side A is half-filled with a solution of 2 M sucrose and 1 M glucose. B. Side B is half-filled with 1 M sucrose and 2 M glucose. C. Initially, the liquid levels on both sides are equal.
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