A few days ago
abrar k

I NEED HELPP!!! OSMOSIS and DIFFUSION LAB!! plz somebody help me here!!?

A laboratory assistant prepared solutions of 0.8 M, 0.6 M, 0.4 M, and 0.2 M sucrose, but forgot

to label them. After realizing the error, the assistant randomly labeled the flasks containing

these four unknown solutions as flask A, flask B, flask C, and flask D.

Design an experiment, based on the principles of diffusion and osmosis, that the assistant could

use to determine which of the flasks contains each of the four unknown solutions.

Include in your answer:

a. a description of how you would set up and perform the experiment;

b. the results you would expect from your experiment; and

c. an explanation of those results based on the principles involved.

Be sure to clearly state the principles addressed in your discussion.

Top 2 Answers
A few days ago
mitzy

Favorite Answer

a) osmosis expeiment – using procedure from this site:http://www.biotopics.co.uk/life/carrot.html

b) The carrot discs will be flabbiest and lightest in the petri dishes with the highest concentration of sucrose whils the carrot disc in the lowest concentration will be heaviest – all rest will be imbetween.

c) Osmosis occurs when different concentrations of water are separated by a differentially permeable membrane. One example of a differentially permeable membrane within a living cell is the plasma membrane in carrot cells. The membrane allows the water molecules from the carrot to move to the high concentration of sucrose.

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6 years ago
?
this is hard
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