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Thanks for the help. Experiment: Two moles of orange-coloured bromine are added to a colourless unknown hydrocarbon. Observations: The resulting solution is clear and colorless Select all the following statements that are correct. t bonds were not present in the hydrocarbon. B. Bromine did not react with the hydrocarbon. О С. At least two t bonds were present in the hydrocarbon. The bromine was decolourized

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Answer #1

The experiment is based on the fact that when bromine is added to unsaturated hydrocarbon then it reacts with that and form compound and decolorize.

So, here two moles of bromine decolorizes means,

--> At least two π bond were present in the hydrocarbon.

--> The bromine was decolourized.

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