Advertisements
Advertisements
Question
How would you convert of thanol into ethene?
Advertisements
Solution
Ethanol can be converted into ethene by the dehydration reaction.
The chemical equation for the above reaction is as follows:
CH3-CH2OH → CH2=CH2 + H2O
When ethanol is heated with concentrated sulphuric acid at 170oC, ethanol gets dehydrated to form ethene, an unsaturated hydrocarbon. Concentrated sulphuric acid acts as the dehydrating agent in this reaction.
APPEARS IN
RELATED QUESTIONS
Give two properties of ethanol.
Write a balanced chemical equations for Heating of Ethanol at 170°C in the presence of conc. Sulphuric acid
State one relevant observation for the following
When the gaseous product obtained by dehydration of ethyl alcohol is passed through bromine water.
State two used of ethanol (other than as a fuel).
Explain why, methanol is much more dangerous to drink than ethanol.
What happens when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid? Write equation of the reaction involved.
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
What is the effect of ethanol on the human body?
Name the addition product formed between ethene and water.
An organic compound 'P' is a constituent of wine. 'P' on reacting with acidified K2Cr2O7 forms another compound 'Q'. When a piece of sodium is added to 'Q' a gas 'R' evolves which burns with a pop sound. Identify P, Q and R and write the chemical equations of the reactions involved.
how can we prepare ethane by reduction of a halogen compound?
What are hydrocarbons? Give one example.
3 mL of ethanol is taken in a test tube and warmed gently in a water bath. A 5% solution of alkaline potassium permanganate is added to the first drop by drop to this solution, then in excess.
- How is a 5% solution of KMnO4 prepared?
- State the role of alkaline potassium permanganate in this reaction. What happens on adding it in excess?
- Write the chemical equation of this reaction.
An organic compound ‘A’ is widely used as a preservative and has the molecular formula C2H4O2. This compound reacts with ethanol to form a sweet-smelling compound ‘B’.
Name the process.
How is ethene prepared from ethanol? Give the reaction involved in it.
Look at below figure and answer the following questions.
- What change would you observe in the calcium hydroxide solution taken in tube B?
- Write the reaction involved in test tubes A and B respectively.
- If ethanol is given instead of ethanoic acid, would you expect the same change?
- How can a solution of lime water be prepared in the laboratory?
Give the balanced chemical equation of the following reaction:
Combustion of ethanol.
Give the balance chemical equation of the following reaction:
Combustion of ethanol.
