Learn to Create a Robotic Device Using Arduino in the Free Webinar. Register Now
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
Give preparation of Absolute Alcohol, Give preparation of Absolute Alcohol,
Give preparation of Absolute Alcohol,
Preparation of Absolute Alcohol: Absolute alcohol is 100% ethanol. The rectified spirit (95.5% ethanol + 4.5% water) is a constant boiling mixture (Azetropic solution) and water cannot be removed by simple fractional distillation method. In the laboratory absolute alcohol is prepared by keeping the rectified spirit in contact with calculated amount of quick lime (CaO) for a few hours and then refluxing and distilling it. Methylated Spirit or Denatured Alcohol: In order to make the industrial alcohol unit for drinking purposes, th erectified alcohol is denatured by adding various poisonous compounds like methanol, pyridine, acetone or petroleum naphtha, etc. This denatured spirit is 95% ethanol and 5% methanol. The methylated spirit is a mixture of 90% ethanol, 9% methanol and 1% other poisonous substances pyridine and acetone or petroleum oil. Power Alcohol: It has been found that absolute ethyl alcohol mixed with petrol and benzene can be used as a motor fuel. Alcohol thus used for generating power is called Powr alcohol. A mixture of 20% ethonol abd 80% gasoline is used in internal combustion engines to derive power. Since, alcohol it self, doesnot mix with petrol, therefore, a third solvent such benzene, ether or tetralin is used as a solvent. Physical Properties:
Preparation of Absolute Alcohol:
Absolute alcohol is 100% ethanol. The rectified spirit (95.5% ethanol + 4.5% water) is a constant boiling mixture (Azetropic solution) and water cannot be removed by simple fractional distillation method.
In the laboratory absolute alcohol is prepared by keeping the rectified spirit in contact with calculated amount of quick lime (CaO) for a few hours and then refluxing and distilling it.
Methylated Spirit or Denatured Alcohol:
In order to make the industrial alcohol unit for drinking purposes, th erectified alcohol is denatured by adding various poisonous compounds like methanol, pyridine, acetone or petroleum naphtha, etc. This denatured spirit is 95% ethanol and 5% methanol. The methylated spirit is a mixture of 90% ethanol, 9% methanol and 1% other poisonous substances pyridine and acetone or petroleum oil.
Power Alcohol: It has been found that absolute ethyl alcohol mixed with petrol and benzene can be used as a motor fuel. Alcohol thus used for generating power is called Powr alcohol. A mixture of 20% ethonol abd 80% gasoline is used in internal combustion engines to derive power. Since, alcohol it self, doesnot mix with petrol, therefore, a third solvent such benzene, ether or tetralin is used as a solvent.
Physical Properties:
Chemical Properties:
Ethyl alcohol shows all the general characteristics of a monohydric (primary) alcohol. It is a neutral substance. It doesnot affect the pH of the water. It burns with blue flame in air or oxygen forming carbon dioxide and water.
C2H5OH + 3O2→ 2CO2 + 3H2O
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -