AQA · Chemistry · 8462
GCSE Chemistry: Test for chlorine
Chemical analysis · AQA GCSE Chemistry (8462), specification point 4.8.2.4. Cards are generated from the exam board's own specification for "Test for chlorine", and every card links back to the page it came from. Specification © AQA — used with attribution.
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What is used to test for chlorine gas?
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Damp litmus paper.
What happens to damp litmus paper in chlorine gas?
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It is bleached and turns white.
Damp litmus paper placed in chlorine gas is ? and turns white.
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bleached
Which gas bleaches damp litmus paper white?
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Chlorine.
What colour does damp litmus paper become in chlorine?
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White — the chlorine bleaches it.
Why must the litmus paper be damp when testing for chlorine?
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Chlorine dissolves in the water to form an acidic, bleaching solution (chloric(I) acid); dry paper would not be bleached.
Which AQA GCSE course covers identification of ions by chemical and spectroscopic means?
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Chemistry only (not Combined Science) — section 4.8.3.
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