# How Salty Is A Potato- A Lab Report

512 words - 3 pages

Aim: My aim is to find the salt concentration in an average potato and I will do it by investigating the interaction of osmosis between the potato and glasses of water with different concentrations of salt.Equipment1 measuring cylinder10 boiling tubes10 bungsPlanFirstly, pour ten equal amounts of the salt solution into the ten boiling tubes so that in the end each boiling tube will contain 50mm of the 10% salt solution. After that, I will change 9 of the 10% salt solutions into 9%, 8%, 7%, 5%, 3%, 1%, 0.5%, and 0.01% solutions. To change 50mm of 10% salt solution into a 7% s ...view middle of the document...

Secondly, After I have finished with the pouring, I add a bung on each of the ten boiling tubes with the solutions inside and I shake hard so the salt will be more equally distributed among the solution.Thirdly, After I have a 10%, 9%, 8%, 7%, 5%, 3%, 2%, 1%, 0.5%, and 0.1% salt solution, I cut out 10 equally sized strips of potatoes. I will pour a bit of each density out so there will be enough space to put the potato piece in without the water gushing out.Fourthly, I wait until the end of the lesson and then I investigate the size of the potato strips. If the of the potato has expanded, then the concentration of salt in the potato is higher than the concentration of salt in the solution. If the potato has shrunk or turned smaller, then the concentration of salt in the potato is lower than the concentration of salt in the solution and if the potato has not changed in size, then the concentration of salt in the potato is equal to that of the potato and if there is no solution with an equal concentration of salt with the potato, I will average the two solutions that are closest in results to each other and I will count that as the concentration of salt in a potato.

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