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प्रश्न
Conversion of ethanol to ethene by the action of concentrated sulphuric acid is an example of _________.
पर्याय
Dehydration
Dehydrogenation
Dehydrohalogenation
Hydrolysis
उत्तर
Conversion of ethanol to ethene by the action of concentrated sulphuric acid is an example of dehydration.
Explanation:
Conc. \[\ce{H2SO4}\] is a useful dehydrator since it turns alcohol into an alkene by removing the water molecule.
\[\begin{array}{cc}
\phantom{..}\ce{H\phantom{...}OH}\phantom{..............................}\\
\phantom{}|\phantom{....}|\phantom{..............................}\\
\ce{H - C - C - H ->[Conc.][H2SO4] H - C = C - H + H2O}\\
\phantom{.}|\phantom{....}|\phantom{..................}|\phantom{....}|\phantom{........}\\
\phantom{.}\ce{\underset{Ethanol}{H\phantom{...}H}\phantom{.................}\underset{Ethene}{H\phantom{...}H}}\phantom{........}\end{array}\]
संबंधित प्रश्न
Match the options A to E with the statements
| A | Alkyne | 1 | No. of molecules in 22.4 dm-3 of carbon dioxide at STP |
| B | Alkane | 2 | An element with the electronic configuration 2,8,8,3 |
| C | Iron | 3 | CnH2n + 2 |
| D | 6.023 × 1023 | 4 | CnH2n − 2 |
| E | Metal | 5 | The metal which forms two types of ions |
Give the general formula of alkanes.
Write the IUPAC and common names of these isomers
Write the structural formula of methane.
How is ethane prepared in the laboratory?
Name the compounds formed when methane burns in insufficient air. Give a balanced equation
Write the names and the formula of the products formed when ethane reacts with chlorine. Write the chemical equations.
Write a balanced chemical equation for the preparation of :
Ethene from bromoethane
Draw the structure of isomers of butene and write their IUPAC names.
Write the IUPAC name of the following:
\[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\\
\ce{H - C = C - C - H}\\
\phantom{.........}|\\
\phantom{.........}\ce{H}
\end{array}\]
