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Potato Osmolarity Lab Report

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Osmolarity Lab 01
Ryanna Leslie BIO LAB 112
1.12.2023

Abstract:
Six different solutions of water with different sucrose concentrations are used in the experiment measured in units of molarity. The solutions range from no solute to a high concentration of solute. They are 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, and 0.6 molar sucrose. Potato pieces are cut into similar sizes, weighed, and then placed in one of six solutions. As soon as the potato pieces are removed from the solution, they are blotted dry, and their final masses are recorded. The potato mass is hypothesized to increase when placed in a sucrose concentration that has a greater water potential than the potato's own water potential. There will be no change in mass if they …show more content…

There was no net movement of water into or out of the potato tuber tissue at that sucrose molarity. We can determine the osmolarity of a potato based on how much weight it gains or loses since it indicates whether or not solutes are flowing into or out of the potato. A potato tuber's weight changes when it is soaked in a sucrose solution. In hypotonic solutions, the difference between the solutions is positive, and in hypertonic solutions, it is negative. Water moves from low sucrose molarity to high, meaning the potato will lose water making it lose weight.

Discussion:

As sucrose water concentration increased, the percent mass change decreased (with some variations depending), supporting the hypothesis. Data from qualitative studies support this conclusion. As the sucrose water's solute concentration increased, the percent change mass decreased. Water would move from the potato to the solution in a hypertonic solution, which would result in mass loss, while in a hypotonic solution, the opposite would

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