Activity 2 - design an experiment: osmolarity of potato tissue s in this activity, you will bathe potato chips in solutions of varying concentrations in order to estimate the osmolarity of potato cells you should modify the method so that you are taking repeated, accurate measurements. Predicting the osmolarity of the potato tuber tissue: you need to do a bit of research to determine the natural potato sucrose molarity once you find that out, it will be easy - if the solution contains a higher molarity than the potato does, water will move out of the potato into the solution (water moves from low sucrose molarity to high.
It appears that the least change in volume in a potato was seen at a sucrose osmolarity of 02m (graph 3) initial and final lengths and diameters of the seven potato cylinders can be found in table and can be compared in graph 1 (table 1)(graph1) table 1: sucrose osmolarity and its effect on potato volume.
Estimate the natural osmolarity of a potato tuber tissue how can you determine the osmolarity of a potato when there is a weight change in the potato tuber from the sucrose solution.
This information helped us estimate the osmolarity of the potato tuber tissue our group hypothesis is that the osmolarity of the potato will have the concentration with the 01 m solution this hypothesis is based off the predicted outcome that smaller molarity concentrations will have the least effect on the potato. According to the results the osmolarity of sucrose within the potato is near 03m because the solution is isotonic the hypotonic solution ranged from 0 to 02 and hypertonic ranging from 04 to 06 in conclusion, our hypothesis was proven correct results the initial weight of the potato slices ranged from 29g to 5g.
Anything above caused the potato to gain weight showing that it was a hypotonic solution and anything below caused the potato to lose weight showing that it is a hypertonic solution teachers can use this experiment to help teach students the concept of osmolarity and tonicity in a real time situation. View lab report - lab 3 osmosis from bio 112 at gaston college determining the osmolarity of potato tissue using sucrose solutions mason pirtle february 16, 2012 biology lab 140 liz. Delaney strange period 2 potato osmolarity lab purpose: the purpose of the lab is to discover the osmolarity of the potato tissue background information: osmolarity is a concept similar to concentration, except it is the total number of solute particles per liter.
The potato cuboids placed into the sucrose solution with the molarities of 06, 08 and 10 lost weight showing that this is a hypertonic solution because it has a high concentration of water inside the potato cell due to the many solutes it contains.
In this investigation, several concentrations of sucrose were used to determine the osmolarity of a potato it was found that the concentration of sucrose was close to 36 in the potato used showing that it was isotonic.