Chemical Test for Chlorine
Specification Point 6.8:
Describe the chemical test for chlorine.
- Chlorine is a pale green gas and has a choking, pungent smell.
- The test for chlorine involves holding damp litmus paper close to the gas source and observing the colour change.
- If chlorine is present the paper will be turned white due to the bleaching effect of chlorine.
- Chlorine in solution has the same effect.
- If blue litmus paper is used it may turn red first due to the acidic nature of chlorine solutions but will then turn white as soon as bleaching begins.
Chlorine gas or chlorine in solution bleaches blue litmus paper white
Edexcel GCSE Chemistry Notes
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