Question:
What happens when ethanol is heated with excess concentrated sulphuric acid at 443 K? Write chemical equation involved. What is the role of concentrated sulphuric acid in this reaction?
What happens when ethanol is heated with excess concentrated sulphuric acid at 443 K? Write chemical equation involved. What is the role of concentrated sulphuric acid in this reaction?
Show Hint
Conc. H$_2$SO$_4$ at 443 K → Dehydration of ethanol to ethene.
Updated On: Feb 26, 2026
Show Solution
Verified By Collegedunia
Solution and Explanation
Observation:
Ethanol gets dehydrated to form ethene.
Reaction:
\[
C_2H_5OH \xrightarrow{443\,K,\, conc.\, H_2SO_4} C_2H_4 + H_2O
\]
Role of Concentrated H$_2$SO$_4$:
- Acts as a dehydrating agent.
- Removes water from ethanol to form ethene.
Was this answer helpful?
0
0
Top CBSE X Science Questions
- More than three million carbon compounds have been discovered in the field of chemistry. The diversity of these compounds is due to the capacity of carbon atoms for bonding with one another as well as with other atoms. Most of the carbon compounds are poor conductors of electricity and have low melting and boiling points.
- CBSE Class X - 2024
- Science
- Chemical Properties Of Carbon Compounds
- Human digestive system is a tube running from mouth to anus. Its main function is to breakdown complex molecules present in the food which cannot be absorbed as such into smaller molecules. These molecules are absorbed across the walls of the tube and the absorbed food reaches each and every cell of the body where it is utilised for obtaining energy.
- CBSE Class X - 2024
- Science
- Human body
- A student has three convex lenses A, B, and C of different focal lengths. He wants to observe the images formed by these lenses on a screen by placing a candle flame at different distances as given in the following table:
Case No. Lens Focal Length Object Distance 1 \(A\) 50 cm 25 cm 2 B 20 cm 60 cm 3 C 15 cm 30 cm - CBSE Class X - 2024
- Science
- Light - Reflection and Refraction
- Consider the unbalanced chemical equations of the chemical reactions listed below:
- \(\text{CaO} + \text{H}_2\text{O} \rightarrow \text{Ca(OH)}_2\)
- \(\text{Pb(NO}_3\text{)}_2 \rightarrow \text{PbO} + \text{NO}_2 + \text{O}_2\)
- \(\text{CuSO}_4 + \text{Fe} \rightarrow \text{FeSO}_4 + \text{Cu}\)
- \(\text{Na}_2\text{SO}_4 + \text{BaCl}_2 \rightarrow \text{BaSO}_4 + \text{NaCl}\)
- CBSE Class X - 2024
- Science
- Chemical Reactions
- The maintenance functions of every living organism on the earth keeps going on even when they are not doing anything particular. The processes which together perform the job of maintenance of life are known as life processes. These processes are nutrition, respiration, transportation and excretion.
- CBSE Class X - 2024
- Science
- Life Processes
View More Questions
Top CBSE X Carbon and its Compounds Questions
- Mention the gland and the hormone secreted by it in scary situation in human beings.
- CBSE Class X - 2026
- Science
- Carbon and its Compounds
- Write the structure and function of Bowman’s capsule.
- CBSE Class X - 2026
- Science
- Carbon and its Compounds
- State the changes taking place in the following structures of flower post fertilization: Zygote Ovule Ovary Sepals
- CBSE Class X - 2026
- Science
- Carbon and its Compounds
- Define germination.
- CBSE Class X - 2026
- Science
- Carbon and its Compounds
- Study the following table and select the correct option:
- CBSE Class X - 2026
- Science
- Carbon and its Compounds
View More Questions
Top CBSE X Questions
- Read the following source carefully and answer the questions that follow:
Print Comes to India
From 1780, James Augustus Hickey began to edit the Bengal Gazette, a weekly maga zine that described itself as ‘a commercial paper open to all, but influenced by none’. So it was private English enterprise, proud of its independence from colonial influence, that began English printing in India. Hickey published a lot of advertisements, including those that related to the import and sale of slaves. But he also published a lot of gossip about the Company’s senior officials in India. Enraged by this, Governor-General War ren Hastings persecuted Hickey, and encouraged the publication of officially sanctioned newspapers that could counter the flow of information that damaged the image of the colonial government. By the close of the eighteenth century, a number of newspapers and journals appeared in print. There were Indians, too, who began to publish Indian news papers. The first to appear was the weekly Bengal Gazette, brought out by Gangadhar Bhattacharya, who was close to Raja Rammohan Roy.- CBSE Class X - 2024
- India and the World of Print
- Read the following source carefully and answer the questions that follow:
Loans from Cooperatives
Besides banks, the other major source of cheap credit in rural areas are the cooperative societies (or cooperatives). Members of a cooperative pool their resources for coopera tion in certain areas. There are several types of cooperatives possible such as farmers cooperatives, weavers cooperatives, industrial workers cooperatives, etc. Krishak Coop erative functions in a village not very far away from Sonpur. It has 2300 farmers as members. It accepts deposits from its members. With these deposits as collateral, the Cooperative has obtained a large loan from the bank. These funds are used to provide loans to members. Once these loans are repaid, another round of lending can take place. Krishak Cooperative provides loans for the purchase of agricultural implements, loans for cultivation and agricultural trade, fishery loans, loans for construction of houses and for a variety of other expenses.- CBSE Class X - 2024
- Variety of Credit
- More than three million carbon compounds have been discovered in the field of chemistry. The diversity of these compounds is due to the capacity of carbon atoms for bonding with one another as well as with other atoms. Most of the carbon compounds are poor conductors of electricity and have low melting and boiling points.
- CBSE Class X - 2024
- Chemical Properties Of Carbon Compounds
- Human digestive system is a tube running from mouth to anus. Its main function is to breakdown complex molecules present in the food which cannot be absorbed as such into smaller molecules. These molecules are absorbed across the walls of the tube and the absorbed food reaches each and every cell of the body where it is utilised for obtaining energy.
- CBSE Class X - 2024
- Human body
- A student has three convex lenses A, B, and C of different focal lengths. He wants to observe the images formed by these lenses on a screen by placing a candle flame at different distances as given in the following table:
Case No. Lens Focal Length Object Distance 1 \(A\) 50 cm 25 cm 2 B 20 cm 60 cm 3 C 15 cm 30 cm - CBSE Class X - 2024
- Light - Reflection and Refraction
View More Questions