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An experiment to show the relationship between shape and diffusion rate
Member rating: No Rating | Words: | Submitted: Mon Feb 20 2006
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An experiment to show the relationship between shape and diffusion rate Aim To see whether there is a relationship between the surface area and the diffusion rate Hypothesis I predict that the smaller blocks of agar will turn clear, or diffuse first, as it has a smaller surface area. This is because there is less surface area and volume for the sulphuric acid to diffuse into. Apparatus * Three sizes of agar, 20x20x20mm, 20x20x10mm, 20x20x5mm * 240ml of sulphuric acid [80ml per beaker] * 3 100ml beakers * Tile used for placing the agar * Tissue to wipe off the sulphuric acid off the agar * 3 scalpels * Ruler, measurable in mm * Stop clock * Calculator Method 1. First, cut three pieces of sulphuric acid in the following sizes 20x20x20mm, 20x20x10mm, 20x20x5mm, as accurately as possible 2. Next, fill the three beakers with 80ml of sulphuric acid each 3. Then, prepare the stop clock, and make sure it is has been reset 4. After,...
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