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प्रश्न
How is ethanol manufactured from sugarcane?
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उत्तर
The fermentation method can be used to obtain ethanol from sugarcane. Actually, in industries, C2H5OH is prepared by the fermentation of molasses, which is a by-product obtained during the manufacture of sugar from sugarcane.
It is converted into ethanol by the following steps:
- Dilution of molasses
- Addition of nitrogen source
- Addition of yeast
- Distillation of wash.
Chemical Reductions:
\[\ce{\underset{\text{Sugar}}{C12H22O11} + H2O->[Invertase]\underset{\text{Glucose}}{C6H12O6} + \underset{\text{Fructose}}{C6H12O6}}\]
\[\ce{\underset{\text{Glucose or Fructose}}{C6H12O6}->[Zymase]\underset{\text{Ethanol}}{2C2H5OH} + 2CO2}\]
APPEARS IN
संबंधित प्रश्न
The next homologue of C2H5OH is ______.
How would you test for an alcohol?
What happens when ethanol is oxidised with alkaline potassium permanganate (or acidified potassium dichromate)? Write the equation of the reaction involved.
Name the product formed when ethanol reacts with acetic acid. Give an equation. What is the name given to this type of reaction?
What is meant by a functional group in carbon compounds?
Give two uses of:
Ethane
How will you bring about the following conversion:
Methane to methanol
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).
Answer the following question.
Write the chemical formula and name of the compound which is the active ingredient of all alcoholic drinks. List its two uses.
Write the chemical equation and name of the product formed when this compound reacts with -
(i) Sodium metal
(ii) hot concentrated sulphuric acid
Give the balanced chemical equation of the following reaction:
Combustion of ethanol.
