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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 a balanced chemical equation for Preparation of ethane from Sodium propionate
Match the formulae in group A with appropriate names from group B:
Group A: CH3COOH, CH3CHO, CH3OH
Group B: Ethanol, Methanol, Ethanal, Ethanoic acid
Name the gas evolved when ethanol reacts with sodium.
What happens when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid? Write equation of the reaction involved.
What happens when ethanol is oxidised with alkaline potassium permanganate (or acidified potassium dichromate)? Write the equation of the reaction involved.
Write the balanced equation to convert:
Ethanol to ethene.
Give the necessary condition and equation of getting ethanol from:
An alkyl halide
Name the following:
Oxidising agent used to convert ethanol to acetic acid.
How would you carry out the following conversion?
Bromoethane to ethanol.
From the given list, name the compound with −OH as part of its structure.
From the given list, name the compound with –COOH as part of its structure.
What are the functional groups? Name any two compounds containing functional groups.
How is ethanoic acid prepared from ethanol? Give the chemical equation.
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.
Ethanol is also known as which of these?
Draw the electron dot structure of ethyne and also draw its structural formula
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 balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
