Sucrose concentration lab - [Xq[8 q theunknownsolutions...

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[Xq “ * ] [8q “ * Determining the Sucrose Concentration Using Osmosis Placing six dialysis bags filled with water in the six unknown concentrations of sucrose,  we found the percent change in mass of each bag and identified the concentrations of  the unknown solutions. Hannah Kim Mr. Paulson per 10 October 1, 2009 1
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[ H q “ * ] [ x p ] “ * ] Introduction The purpose of this experiment is to determine the concentration of sucrose of six  unknown concentrations. The six concentrations are 0M, 0.2M, 0.4M, 0.6M, 0.8M, and  1.0M. However, we do not know which beaker contains which concentration. Therefore,  we need to find out the concentrations of sucrose using osmosis.  Osmosis   is   the   diffusion   of   water   through   a   membrane   that   is   selectively  permeable. Osmosis is especially important in living organisms because all cells need the  process of osmosis to balance out the concentrations of solute. Water moves from an  area of high water potential to an area of low water potential. The measurement of free  energy of water in a solution is the water potential. If the solute concentration is higher  inside   the   membrane   than   the   outside,   then   the   cell   is   hypertonic;   if   the   solute  concentration is lower on the inside and higher on the outside, then the cell is hypotonic.  Hence, water will move from higher concentration to the area with lower concentration  to balance the concentrations out. We decided to use six dialysis bags to observe the osmosis movement in each of  the six beakers of different concentrations. I predict that the dialysis bag that has no  change in mass has zero concentration of sucrose. This is an isotonic environment, where  there is no net change in mass because both the beaker and the dialysis bag do not  contain sucrose. Also, the dialysis bag that lost the most water to the beaker will have 
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