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प्रश्न
When ethanol is heated with concentrated sulphuric acid at 170°C, it gets converted into ethene. In this reaction, concentrated sulphuric acid acts as:
(a) oxidising agent
(b) catalyst
(c) dehydrating agent
(d) reducing agent
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उत्तर
dehydrating agent
Sulphuric acid acts as a dehydrating agent as it removes water molecules from the alcohol (ethanol), and converts it to ethene.
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संबंधित प्रश्न
Give the structural formula of ethanol.
Give the structural formula of Ethanol
............ is a functional group of the alcohol.
Draw the structures for the following compounds:
Ethanal
Complete the following equation:
`CH_3 CH_2 OH` 
In a tabular form, differentiate between ethanol and ethanoic acid under the following heads:
(i) Physical state
(ii) Taste
(iii) NaHCO3 test
(iv) Ester test
How will you bring about following conversions:
(a) Methane to methanol
(b) Ethane to ethanol (acetaldehyde)
(c) Methane to methanoic acid
Give the necessary conditions and equations of getting ethanol from:
(a) Alkyl halide
(b) An ethene
Ethanol can be converted to ethene which can be changed to ethane.
Choose the correct word or phrase from the options given below to complete the following sentences:
The conversion of ethanol to ehane is an example of_________(dehydration, dehydrogenation)
From the given list, name the compound with –COOH as part of its structure.
Write the structural formulae of the following compound:
Ethane
Answer the following question.
Write the chemical formula and name of the compound which is the active ingredient of all alcoholic drinks. List its two uses.
Write the chemical equation and name of the product formed when this compound reacts with -
(i) Sodium metal
(ii) hot concentrated sulphuric acid
At room temperature ethanol is _______.
C2H5OH + 3O2 → 2CO2 + 3H2O is a ______
Write the chemical equation for the following:
Oxidation of ethanol
How would you bring about the following conversions? Name the process and write the reaction involved.
What is the role of concentrated Sulphuric acid when it is heated with Ethanol at 443 K. Give the reaction involved.
What happens when ethanol is heated at 443K in the presence of conc. H2SO4? Write the role of conc. H2SO4 in this case.
Give the balanced chemical equation of the following reaction:
Oxidation of ethanol by acidified potassium dichromate.
