Advertisements
Advertisements
प्रश्न
How is ethene prepared from ethanol? Give the reaction involved in it.
Advertisements
उत्तर
Ethene is prepared from ethanol by heating it at 443 K with excess concentrated sulphuric acid.
`underset("(ethanol)")("C"_2"H"_5"OH")overset("Conc"."H"_2"SO"_4)(->)underset("(ethene)")("CH"_2 = "CH"_2) + "H"_2"O"`
The concentrated sulphuric acid acts as a dehydrating agent which removes water from ethanol.
APPEARS IN
संबंधित प्रश्न
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.
What is meant by a functional group? Explain with an example.
Draw the structures for the following compounds of Pentanal
Three organic compounds A, B and C have the following molecular formulae: C4H8O2
Which compound contains an alcohol group? Write its name and structural formula.
Give the harmful effects of drinking alcohol.
What happens when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid? Write equation of the reaction involved.
Write names and formulae of hydrocarbons containing a single and a double bond (one example for each). Give one characteristic chemical property of each.
Consider the following organic compound:
CH3OH, C2H5OH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO
Out of these compound:
Which compound is used to sterilise wounds and syringes?
State the method of preparation of ethanol by hydrolysis of ethyl bromide.
How does ethanol reacts with
(a) Metallic sodium
(b) Acetic acid
(c) Conc.H2S04
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).
Write balanced equations to show the preparation of the following:
Ethene from ethanol
Write any two physical properties of Ethanol.
Colorless ethanol is in liquid state at room temperature.
Which of the following are used as anesthetics?
Give the balanced chemical equation of the following reaction:
Oxidation of ethanol by acidified potassium dichromate.
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?
Name the compound formed when ethanol is heated at 443 K in the presence of conc. \[\ce{H2SO4}\] and draw its electron dot structure.
State the role of conc. \[\ce{H2SO4}\] in the reaction.
Give the balanced chemical equation of the following reaction:
Combustion of ethanol.
