# Calculation of Water Potential from Experimental Data -...

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Calculation of Water Potential from Experimental DataName: _____________LARA IBRAHIM______________ Date: _10/3/19_________The solute potential of a sucrose solution can be calculated using the following formula:Ys= -iCRT·I = 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 conditionsYs= -i x C x R x TYs= -(1) (1.0 mole/liter) (R = 0.0831 liter bars/mole °K) (295 °K)Ys= -24.51 barsKnowing the solute potential of the solution (Ys) and knowing that the pressure potential of the solution is zero (Yp= 0) allows you to calculate the water potential of the solution. The water
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