Ethanol Formula: Overview, Questions, Preparation

Alcohols, Phenols and Ethers

Updated on Apr 17, 2021 02:52 IST

What is ethanol?

Ethanol is a simple alcoholic compound used in alcoholic drinks. The chemical formula of ethanol is C2H6O. The chemical formula of ethanol is also written in other ways like CH3−CH2−OH and C2H5OH. Ethanol is a flammable colourless chemical compound. The two carbon chains are present in ethanol. One of which is attached to the hydroxyl ion group. Ethanol is produced through the process of fermentation.

The presence of the enzymes invertase and zymase can produce glucose and fructose by undergoing fermentation. The chemical reaction is as follows:

Fermentation

Properties of ethanol

Chemical formula

C2H6O, CH3−CH2−OH 

Molarity

46. 069 g.mol-2

Density

0.78945 g/cm3 (at 20oC)

Boiling point

78.2oC

Melting point

-112.14oC

Acidity

15.9

Structure of ethanol

Ethanol is simple alcohol, and the chemical formula of ethanol is C 2 H 6 O. It has 2 molecules of carbon, 6 of hydrogen, and one of oxygen, however, the concentration of ethanol changes as per the requirements, and use, it, in turn, changes the chemical formula. The structural illustration can be seen below:
Ethanol

Uses of ethanol

Ethanol can be used in a variety of ways that are explained below:

  1. Pharmaceutical industries: Ethanol is widely used in the manufacturing of medicines. It is used to make antidotes and antiseptics for antifungal effects. It is very effective against viruses and bacteria and has the capacity to kill them from the root. It is also used for the production of cleaning wipes and sprays.
  2. Recreational: Most of the drugs in chemical industries have a concentration of ethanol in them. Despite the ban or limited use of alcoholic beverages and drugs sanctioned by the government, it is readily available and contains ethanol. It is used by many consumers, but it is toxic for children.
  3. Fuel: Ethanol's concentration can be found in engine fuel. In Brazil, gasoline has a 25% concentration of anhydrous ethanol. One of how ethanol can be used is rocket fuel. Pump stations also have some ethanol stations containing the distribution of only ethanol.

Ethanol formula for class 12

For the current year of 2021, the chapter on alcohols, phenols, and ethers holds a weightage of 6 marks including one short question (3 marks), one very short question (2 marks), and one objective type question (1 mark).

A. The boiling point of ethanol is 78.2oC.

 

A. It is often used interchangeably. Both alcohol and ethanol have the somewhat same concentration of chemical compounds and molecules. Ethanol is a toxic chemical compound and is flammable same as alcohol.

 

A. The best alcohol for the use of disinfectants is Isopropyl alcohol. It has around 80-90 % of alcohol concentration.

 

  A. Isopropyl alcohol and ethyl alcohol can substitute each other, but the first preference is always given to isopropyl alcohol when it comes to using it for the skin.

 

  A. The vapour pressure of ethanol is 5.95 kPa.

 

FAQs regarding Ethanol Formula

Q. What is the boiling point of ethanol?

Q. Are alcohol and ethanol the same?

Q. What is the best alcohol for disinfectants?

Q. Which is better: isopropyl alcohol or ethyl alcohol?

Q. What is the vapour pressure of ethanol?

Q. What is the percentage when the zymase enzyme starts to hinder the chemical reaction with ethanol.

A. Zymase starts to inhibit when the percentage exceeds 14.

Q. State the most dangerous ingredient used in the process of manufacturing the hand sanitisers.

A. The most dangerous chemical ingredient used in the process of manufacturing hand sanitisers is chemical methanol. If methanol comes in direct contact with the skin, it can damage the skin to the extent. It is one of the most toxic compounds present. It is a fatal chemical compound.

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Alcohols, Phenols and Ethers Exam

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