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How the concentration of salt in water affects the rate of osmosis in potato tissue.
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| Submitted: Mon Oct 20 2003
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Aim: To find out how the concentration of salt in water affects the rate of osmosis in potato tissue. Apparatus: * Potato * McCarthy Bottles (x15) * Corks (x15) * Water (150cm3) * 2 Molar Salt Solution (150cm3) * Cork Borer * Weight Measuring Scales * Scalpel * Stirring Rod * Pipette * Ruler Diagram: 0 molar 0.5 molar 1 molar 1.5 molar 2 molar Salt Solutions: To get the correct concentrations, you need the correct amounts of salt or pre-made 2 molar salt solution. The calculations for both are shown below. Pre-made 2 Molar Salt Solution This substance already has the required amount of salt dissolved into the water to make it qualify as a 2 molar solution. To get lower molar values, the solution must have a certain amount of water added to it. These values are as follows: To get: -2.0 moles in 20cm3 of water using the 2m solution, add no water -1.5 moles in 20cm3 of water using the 2m solution, add 5cm3 of water to 15cm3 salt solution -1.0 moles...
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