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Propene gas is bubbled into bromine water - OCR Gateway - GCSE Chemistry - Question 11 - 2021 - Paper 2
Question 11
Propene gas is bubbled into bromine water. What happens to the colour of the bromine water? A Changes from colourless to orange B Changes from orange to colourless C... show full transcript
Worked Solution & Example Answer:Propene gas is bubbled into bromine water - OCR Gateway - GCSE Chemistry - Question 11 - 2021 - Paper 2
Step 1
What happens to the colour of the bromine water?
Answer
When propene gas is bubbled into bromine water, the colour changes from orange to colourless. This is due to the electrophilic addition reaction of bromine with the alkene (propene), which decolourises the bromine water.
