Diffusion of potassium permanganate crystals in water

Essay by 11838High School, 10th gradeB+, October 2007

download word file, 1 pages 4.0

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Aim:To discover what factors affect the rate of diffusion of potassium permanganate crystals in water.

Statement:What will happen? How will room temperate solutions or heated solutions increase the rate of diffusion of the potassium crystals?Hypothesis:Heat will speed up the process of diffusion because heat will give out energy that will be able to speed up the process of spreading the potassium molecules.

Materials:WaterVinegarPermanganate crystalsBunsen Burner IceGlass beakersSoapy waterProcedure:1.Add water to one beaker. Keep at room temperature. Then add crystals to water. Time how long it takes to diffuse all the crystals. When finished empty and wash beaker.

2.Add water to one beaker. Heat to boiling point temperature. Then add crystals to water. Time how long it takes to diffuse all the crystals. When finished empty and wash beaker.

3.Add soapy water to one clean beaker. Heat slightly to warm temperature. Add crystals. Time how long to diffuse the crystals. When finished empty and wash.

4.Add oil to one clean beaker. Keep at room temperature. Then add crystals to water. Time how long it takes to diffuse all the crystals. When finished empty and wash beaker.

5.Add vinegar one clean beaker. Heat slightly to warm temperature. Add crystals. Time how long to diffuse the crystals. When finished empty and wash.

6.Add vinegar to one clean beaker. Keep at room temperature. Then add crystals to water. Time how long it takes to diffuse all the crystals. When finished empty and wash beaker.

7.Observe what happens in each case, record time and details.

8. Remember before preceding with a practical all safety precautions must be taken to prevent damage and for personal safety, Example: Safety goggles.

Results:Room TempHeated to 90ºcMediaTemp. TimeTempTimeVinegarWaterSoapy waterObservations:Heat has a great effect...