Question
State the effect of an acid and a base on an olfactory indicator. Explain it.
✓
Answer
- Acid does not remove the odour of an olfactory indicator while base can remove the odour of the olfactory indicator.
- For example, when the dilute $HCl$ is sprayed on cloth strip treated with clove oil, then the smell of clove oil persists.
- This indicate that acid can't destroy the odour of olfactory indicator.
- But, when the dilute $NaOH$ is sprayed on cloth strip treated with clove oil, then the smell of clove oil cannot be detected.
- This indicate that base can remove the odour of olfactory indicator.
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