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How will the rate of diffusion be affected if I increase the difference in concentration?

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Introduction

Diffusion of Red Dye Planning A: Research Question: How will the rate of diffusion be affected if I increase the difference in concentration? Hypothesis If we add more dye drops into the water beaker then it should take more time to spread/diffuse through the water because the molecules in the dye, when they are all together, are more organized then if they were spread apart. Since it is a energetic state, it will tend to do spread. However once the dye has spread, it is now less organized, it has a lower energy state. It will now tend to remain the way it is. Variables Rate of Diffusion= SA* Difference in [ ] Length of diffusion part Independent: the number of red dye drops Dependent: rate of diffusion Controlled: substances used - red dye and water - Planning B: Apparatus: -100 mL beaker -Red Dye -pipette -Stopwatch -Water Method: *First Time 1. ...read more.

Middle

*Second Time: 1. Take 50mL of water and put it in a 100ml beaker. 2. With the pipette take two drop of red dye and drop it into the beaker with water 3. Now take the time it takes for the dye to get a clear color. (to diffuse) 4. Write down the result. **Perform this lab 6-8 more times, with each time add 1 more drop then the last try. ex. lab # 3- 3 drops of dye, lab # 4- 4 drops of dye etc. Date Collection: Numbers of drops Time it took for the dye to diffuse (min) 1 drop of red dye 6.07 2 drop of red dye 5.35 3 drops of red dye 4.45 4 drops of red dye 3.01 5 drops of red dye 2.50 6 drops of ...read more.

Conclusion

Because when I performed the lab, it turned out to be the other way, because from the beginning I wanted to perform a lab where I would put dye drops in the water and see how long time it would take for the dye to completely disappear, which didn't work. It was impossible for the red dye to completely disappear. So I had to change to that the red dye would diffuse which went better. So to make a final statement when you drop more red dye into the water beaker it will take less time to diffuse, because once the red dye hits the surface of the water it will make the rest of the dye to diffuse. By. Larissa Khudur IS11-IB1 22/09-05 Biology Diffusion of red dye. ...read more.

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