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प्रश्न
Give a chemical test to distinguish between Saturated and Unsaturated?
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उत्तर
Chemical test to distinguish :
Saturated and Unsaturated
Chemical test:- Bromine water test, if unsaturated hydrocarbons are added to it then the solution turns colourless. The unsaturated hydrocarbon decolourise bromine water. Whereas no change takes place to the solution when saturated hydrocarbons are added to bromine water.
Physical test:- Distinction between saturated and unsaturated hydrocarbons: Saturated hydrocarbons burn in the air with clear (blue) flame, whereas burning of unsaturated hydrocarbons (alkenes and alkynes) gives sooty (yellowish) flame. Saturated hydrocarbons contain less percentage of carbon as compared to unsaturated hydrocarbons; therefore, they get completely oxidised by the oxygen present in the air on burning. Unsaturated hydrocarbons require a lot of oxygen for complete oxidation whose demand is not fulfilled by air. Due to this reason, unsaturated hydrocarbons burn with a sooty flame. The sooty flame contains partially burnt carbon in the form of soot.
संबंधित प्रश्न
Name an organic compound which is called ‘wood spirit’.
Give the names of any three alkyl groups. How are they formed?
Explain the following:
Ethyne is used for welding and cutting metals
What is the special feature of the structure of:
(a) C2H2
(b) C2H4
Name the addition product formed between ethane and water.
Give the correct IUPAC name and the fiJnctional group for each of the
compounds whose structural formulae are given below:
\[\begin{array}{cc}
\phantom{.....................}\ce{H}\phantom{...}\ce{H}\phantom{....}\ce{O}\phantom{...............}\\
\phantom{...........}| \phantom{....}|\phantom{.} \phantom{..}//\phantom{......}\\
\ce{H-C-C-C}\\
\phantom{.......}| \phantom{....}|\phantom{..}\phantom{..}\text{\\} \phantom{..}\\
\phantom{...............}\ce{H}\phantom{...}\ce{H}\phantom{}\phantom{...}\ce{H}\phantom{.........}\
\end{array}\]
Ethanoic acid reacts with ethanol in the presence of concentrated H2SO4, so as to form a compound and water. The chemical reaction which takes place is called ______.
Give balanced equation for the laboratory preparations of the following organic compound:
An unsaturated hydrocarbon from an alcohol
Name the following:
Process by which ethane is obtained from ethene.
Name the gases which extinguishes burning wooden splinters.
