Chemistry
Give a chemical test to distinguish between
(a) saturated and unsaturated compounds
(b) ethane and ethene
(c) ethene (ethylene) and ethyne (acetylene)
Organic Chemistry
18 Likes
Answer
(a) On adding few drops of alkaline potassium permanganate (purple colour) to the hydrocarbons, no change is seen in saturated hydrocarbons whereas the purple colour fades in case of unsaturated hydrocarbons.
(b) When bromine is passed through solutions of ethane and ethene in an inert solvent [CCl4] at room temperature, incase of ethene gas, brown colour of bromine is discharged whereas in case of ethane gas no change in the colour is observed.
(c) On adding ammoniacal silver nitrate, no change is seen in ethene whereas white ppt. of silver acetylide is formed in case of ethyne.
Answered By
12 Likes
Related Questions
Name the hydrocarbon which:
(a) is a tetrahedral molecule.
(b) is a planar molecule.
(c) is a linear molecule.
(d) forms a red precipitate with ammoniacal solution of copper (I) chloride.
(e) is known as paraffin.
(f) is known as olefin.
(g) a compound which will give ethyne (acetylene) gas when treated with water.
Classify the following compounds as alkanes, alkenes and alkynes: C3H4, C3H8, C5H8, C3H6
Compound X is bubbled through bromine dissolved in CCl4;
(a) Draw the structure of X.
(b) State your observation during the reaction.
Give balanced equations for the following conversions:
(a) An alkene to an alkane
(b) An alkene to an alcohol
(c) An alkyne to an alkene.