Difference between revisions of "Phenolphthalein"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
| − | [[Phenolphthalein]] is a | + | [[Phenolphthalein]] is an [[Indicator (Chemistry)|indicator]] [[dye]] that changes colour depending on the [[pH]] of a [[solution]]. |
| + | |||
| + | ===About Phenolphthalein=== | ||
| + | : [[Phenolphthalein]] is a [[transparent]] without colour when it is in a [[Neutral (Chemistry)|neutral]] [[solution]]. | ||
| + | : [[Phenolphthalein]] changes colour quickly between [[pH]] 7 and 8 to turn pinky purple at [[pH]] 8 and beyond. | ||
| + | {| class="wikitable" | ||
| + | |+ Phenolphthalein pH scale. | ||
| + | |- | ||
| + | |[[File:PhenolphthaleinpHScale.png|center|600px]] | ||
| + | |- | ||
| + | |} | ||
| + | |||
| + | |||
| + | ===References=== | ||
| + | ====AQA==== | ||
| + | |||
| + | :[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Phenolphthalein, page 115, GCSE Biology; The Revision Guide, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945962/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945962&linkCode=as2&tag=nrjc-21&linkId=476bb5c8d1dfb5c08ac81b6d4d1c98d8 ''Phenolphthalein, page 150, GCSE Chemistry, CGP, AQA ''] | ||
| + | |||
| + | |||
| + | ====Edexcel==== | ||
| + | |||
| + | :[https://www.amazon.co.uk/gp/product/1782945725/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945725&linkCode=as2&tag=nrjc-21&linkId=694be7494de75af3349537d34e13f7f0 ''Phenolphthalein, page 43, GCSE Chemistry; The Revision Guide, CGP, Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Phenolphthalein, pages 119, 186, GCSE Chemistry, CGP, Edexcel ''] | ||
Latest revision as of 02:26, 27 November 2019
Key Stage 3
Meaning
Phenolphthalein is an indicator dye that changes colour depending on the pH of a solution.
About Phenolphthalein
- Phenolphthalein is a transparent without colour when it is in a neutral solution.
- Phenolphthalein changes colour quickly between pH 7 and 8 to turn pinky purple at pH 8 and beyond.
 |
References
AQA
- Phenolphthalein, page 115, GCSE Biology; The Revision Guide, CGP, AQA
- Phenolphthalein, page 150, GCSE Chemistry, CGP, AQA