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UV-Visible Spectroscopy Tutorial Guide by ariff udin is a document available to read on EtoBox.
1. When light passes through a compound, some wavelengths are absorbed because their energy is used to promote an electron into a higher energy orbital. 2. Beta-carotene absorbs strongly in the UV and visible regions between 400-500nm, peaking at 470nm. It is orange because its conjugated double bond structure absorbs blue and green light. 3. Phenolphthalein exists in two forms - colorless at low pH and magenta at high pH. Adding alkali delocalizes electrons in the structure, causing it to absorb differe
- Author
- ariff udin
- Language
- EN