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प्रश्न
Name the compound formed when ethanol is heated in excess of conc. sulphuric acid at 443 K. Also, write the chemical equation of the reaction stating the role of conc. sulphuric acid in it. What would happen if hydrogen is added to the product of this reaction in the presence of a catalyst such as palladium or nickel?
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उत्तर
The compound that is formed when ethanol is heated in excess of conc. sulphuric acid at 443 K is ethene.
The concentrated sulphuric acid acts as a dehydrating agent in this reaction. It facilitates the removal of a molecule of water from the ethanol molecule.
When hydrogen is added to ethene in the presence of a catalyst such as palladium or nickel, saturation of the compound takes place to form ethane.
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संबंधित प्रश्न
How would you distinguish experimentally between an alcohol and a carboxylic acid?
The catalyst used in the contact process is
(A) Copper
(B) Iron
(C) Vanadium pentoxide
(D) Manganese dioxide
Draw the structure for the following compound:
Butanal
What happens when ethanol is heated with concentrated sulphuric acid at 170°C? Write the equation of the reaction which takes place.
What happens when ethanol is oxidised with alkaline potassium permanganate (or acidified potassium dichromate)? Write the equation of the reaction involved.
One of the following substances is not added to make denatured alcohol. This is:
(a) methyl alcohol
(b) copper sulphate
(c) chloroform
(d) pyridine
Name the following:
100% ethanol
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:
Converting ethanol to ethene requires the use of_________(Concentrated hydrochloric acid, concentrated nitric cid, concentrated sulphuric acid).
State how the following conversion can be carried out:
Ethene to ethyl alcohol
Why is the conversion of ethanol to ethanoic acid considered an oxidation reaction? Write the oxidising agent used in the reaction involved.
