Home Chemistry 15
The red cabbage indicator that I am using works fine. However it looks rather red, further investigation and starting discussion on Science Forums about this, suggested a cause and solution.
In essence the indicator is acidic, hence the read colour rather than the purple neutral colour.
I have now made up a new batch, which looks a lot better
The image above illustrates the old indicator on the right hand side, the new is in the beaker on the left. You can see quite a big difference in colour.
I have extracted the pH colour scale from the original infographic below
Video
There is a 3 min Video here that I made while making the new batch of indicator up.
- Add hot water to beaker
- Add red cabbage to water
- Mix (until water is the required purple colour)
- All to cool
- Add to regent bottle
Created more indicator as required.
Discussion
Tags
#Chemistry,#HomeChemistry,#HomeChemistry15,#Science, #RedCabbageIndicator,#pH,#Scale,#Acid,#Alkali,#Neutral,#Color,#Scale
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