Chemistry A-Level
observed colours
What observed colours means in Chemistry A-Level, as defined for AQA.
Definition of observed colours
Check what you remember
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Reference: AQA
Chlorine added to aqueous sodium bromide gives an orange solution of bromine, and with aqueous sodium iodide gives a brown solution, or a black solid, of iodine.
Topics that use observed colours
- Trends in properties (AQA A-Level)
Related terms
- acidifying with nitric acid
- choice of acid
- concentrated sulfuric acid
- confirmation with ammonia
- confirming a halide
- dilute and concentrated ammonia
- displacement reactions
- electronegativity down a group
Using observed colours in the exam
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