Flame Test
Easychemistry
Characteristic violet flame indicates presence of:
Select the correct option:
Solution
Incorrect! Answer:
Potassium
- Principle: When metal salts are heated in a Bunsen flame, electrons are excited and then release energy as visible light upon returning to the ground state.
- Observations:
- Potassium (K+): Imparts a pale violet (lilac) flame coloration.
- Sodium (Na+): Shows a persistent golden yellow flame.
- Calcium (Ca2+): Gives a brick red flame.
- Barium (Ba2+): Produces an apple green flame.
- Diagnosis: Violet coloration specifically confirms the presence of Potassium.
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About This Question
- Subject
- chemistry
- Chapter
- practical chemistry
- Topic
- flame test
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Potassium
- Principle: When metal salts are heated in a Bunsen flame, electrons are excited and then release energy as visible light upon returning to the ground state.
- Observations:
- Potassium (K+): Imparts a pale violet (lilac) flame coloration.
- Sodium (Na+): Shows a persistent golden yellow flame.
- Calcium (Ca2+): Gives a brick red flame.
- Barium (Ba2+): Produces an apple green flame.
- Diagnosis: Violet coloration specifically confirms the presence of Potassium.
This easy difficulty chemistry question is from the chapter practical chemistry, covering the topic of flame test. It appeared in the 2025 exam.
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