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Organic Chemistry — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryOrganic Chemistry4 Marks
Question
Explain the following:
(i) When bromine vapours are passed into ethyne solution in carbon tetrachloride.
(ii) When a gaseous product obtained by the dehydration of alcohol is passed through bromine water.
(iii) Addition of ethyl alcohol to acetic acid in the presence of concentrated sulphuric acid.
(iv) A piece of sodium metal is put into ethanol at room temperature.
✓

Answer

(i) The bromine vapours (reddish brown) decolourise.
(ii) The bromine water (reddish brown in colour) decolourises.
(iii) On warming the mixture gives fruity smell.
(iv) It produces effervescence with the release of hydrogen gas.

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