What characteristic flame color is observed for Potassium salts viewed through blue cobalt glass?
Answer and explanation
Correct answer: C. Crimson or violet
- Step 1: Potassium imparts a delicate lilac/violet coloration to non-luminous Bunsen flames. Step 2. Blue cobalt glass absorbs yellow sodium glare, allowing the purple-violet potassium emission to be observed clearly. Answer: Crimson or violet. Why not the others: Golden yellow is Sodium; Crimson red is Strontium/Lithium; Grass green is Barium.
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