# The water potential of the solution at equilibrium

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1. The water potential of the solution at equilibrium will be equal to the waterpotential of the potato cells. What is the water potential of the potato cells inthe lab you completed? Show ALL of your work in the space below. Include the formula. Don’t forget units. (3 points)
20 points2. Predictthe direction in which water will flow given the following information: A student calculates that the water potential of a solution in a dialysis bag is equal to -6.25 bars (s = -6.25, p= 0). The water potential of a solution surrounding the bag is -3.25 bars (s = -3.25, p= 0). In which direction will water flow? Justifyyour answer.) (2 points)3. If a plant cell’s water potential is lower than its surrounding environment and if pressure is equal to zero, is the cell hypertonic (in terms of solute concentration) or hypotonic to its environment? Will the cell gain or lose water? Justify your answer. (3 points)4. If yam cores were placed in a salt (NaCl) solution at 22 C for 24 hours andthe molar concentration is determined to be 0.34 M, calculate the water potential. (Ionization constant for NaCl = 2.0) Show ALL of your work in the space below. Include the formula and don’t forget units. (3 points)5. What effect does adding solute have on the solute potential component (s) of that solution? Justify your answer. (2 points)6. If a cell’s p= 3 bars and its s = -4.5 bars, what is the resulting ? ShowALL of your work in the space below. Include the formula and don’t forget units. (2 points)7. At 20 C, a cell with pof 3 bars is in equilibrium with the surrounding 0.4M sucrose solution in an open container. What is the molar concentration of sucrose in the cell? Show ALL of your work in the space below. Include the formula and don’t forget units. (5 points)
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