Alcohol Functional Group
Alcohol Functional Group
Alcohols:
Alcohols are the group of the organic compounds which contains carbon, hydrogen and oxygen.These are obtained by replacement of one hydrogen atom with the hydroxy group.
Classification of Alcohols:
Alcohols are classified according to number of hydroxyl groups present in their molecule. Alcohols with one, two and three hydroxyl groups are called monohydric, dihydric & trihydric alcohols respectively. Alcohols which contains four or more hydroxyl groups are called polyhydric alcohols.
Methanol Ethylene glycol Glycerol Butane - 1,2,3,4- tetrol
Monohydric alcohols are further divided into three classes :
(i) Primary alcohol : The hydroxyl group is attached with primary carbon atom. They possess a characteristic group
(ii) Secondary alcohol : The hydroxyl group attached to secondary carbon atom. They possess group.
Propane - 2 - ol
(iii) Tertiary alcohol : The hydroxyl group attached to tertiary carbon atom. They possess a characteristic group C - OH.
2 - Methyl propan - 2 - ol
Physical Properties:
1. The first two members of alcohol; methanol and ethanol, are volatile liquids.
2. All alcohols are neutral to indicators.
Alcohol is obtained by the replacement of ______________________ in an alkane by hydroxyl group. | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct : (a) Alcohols react with acids to form esters. (b) The first two members of alcohol; methanol and ethanol, are volatile liquids. (c) Alcohols which contains four or more hydroxyl groups are called polyhydric alcohols. | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are correct : (a) The first two members of alcohol; methanol and ethanol, are volatile liquids. (b) Alcohols are the group of the organic compounds which contains carbon, hydrogen and oxygen. | |||
| Right Option : C | |||
| View Explanation | |||
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