# Water Potential Practice Problems.docx - 20 points...

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20 pointsCalculation of Water Potential from Experimental DataName: ___________________________Date: __________The solute potential of a sucrose solution can be calculated using the following formula:s= -iCRTi = Ionization constant (for sucrose this is 1.0 because sucrose is a sugar and does not ionize in water.)C = Molar concentration R = Pressure constant (R = 0.0831 liter bars/mole K)T = Temperature K (273 + C of solution)The units of measure will cancel as shown in the following example:If you have a 1.0 M sugar solution at 22 C under standard atmospheric conditionss= -i x C x R x Ts= -(1) (1.0 mole/liter) (R = 0.0831 liter bars/mole K) (295 K)s= -24.51 barsKnowing the solute potential of the solution (s) and knowing that the pressure potential of the solution is zero (p= 0) allows you to calculate the water potential of the solution. The water potential will be equal to the solutepotential of the solution.= 0 + sor = s 1. The water potential of the solution at equilibrium will be equal to the water
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