Investigating Osmosis in Potatoes at Different Concentrations of Sucrose Solutions

Investigating Osmosis in Potatoes at Different Concentrations of Sucrose Solutions

Planning

Aim:

The aim of this experiment is to find out how solutions of different

strength affect the osmotic movement.

Preliminary work:

For the preliminary work, I did a try out test to see if the method I

had works. Also, I wanted to use the results I have after completing

the experiment so that I can have an overview of how sucrose solutions

of different strengths affect the diffusion of water in potato chips.

I would also use what I have concluded at the end of the experiment to

make a final decision of whether to use the method would produce the

best and most reliable results.

I thought that the lengths of the potatoes will change after the

experiment because there had to be some movement in or out of the

chip. So I thought that the size of the potato would increase or

decrease depending on the solution it is in. In the method of the

try-out test, I had came up with is to measure the lengths of the

potato chips before and after the experiment to see if there are any

changes to the size of the potato chip due to the movement caused by

osmotic water diffusion.

The method I used for the try-out test:

1. I made 6 potato chips by using a potato borer from the one whole

potato and made sure that they have the same length.

2. Using a measuring cylinder, I measured the amounts of each

solutes separately according to the ratio of the I made sucrose

concentrations of 6 various concentrations ranging from distilled

water to 1 Molar sucrose concentration (and poured the specific

amount when mixing a certain solution and pour them into separate

boiling tubes) using a specific sucrose: distilled water ratio and

labeled them with their sucrose concentration separately.