Diffusion of Ammonium hydroxide with red litmus paper
Definition of diffusion
1. Diffusion is the process in which particles move from an area of high concentration to an area of low concentration in order to evenly spread out.
2 Diagram.
3. During the diffusion tube experiment I noted that firstly ammonium hydroxide was placed on to a piece of cotton wool. The cotton wool (with the ammonium hydroxide) was then placed in to a diffusion tube containing around 10 pieces of curled red litmus paper lined up from one end of the diffusion tube to the other.
I had observed the diffusion tube carefully when approximately a minute later I noticed the first litmus paper had changed colour from pink to blue. About five minutes later the second red litmus paper in line had also changed from pink to blue. Two days later the entire tube had changed colour from pink to blue, thus proving that diffusion had occurred.
4. Using my knowledge of diffusion I can easily state that the......
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