Alcohols, Phenols, Ethers Worksheet

Identification of Type of Alcohols

15 Fill in the Blank Questions – Identification of Types of Alcohols

1. Ethanol is classified as a _______ alcohol.
2. Isopropanol is a _______ alcohol due to the OH group on a secondary carbon.
3. Tert-butanol is an example of a _______ alcohol.
4. CH₃CH₂CH₂OH is a _______ alcohol.
5. The alcohol formed from reduction of acetone is a _______ alcohol.
6. Methanol is a _______ alcohol as it has only one carbon.
7. An alcohol with the OH group attached to a carbon bonded to three other carbons is a _______ alcohol.
8. Which type of alcohol is more prone to dehydration: primary, secondary, or tertiary? _______
9. The OH group in a secondary alcohol is attached to a carbon bonded to _______ other carbons.
10. A compound with formula (CH₃)₂CHOH is a _______ alcohol.
11. CH₃OH is classified as a _______ alcohol.
12. The alcohol formed from 2-butanone and Grignard reagent is a _______ alcohol.
13. Ethylene glycol is classified as a _______ diol.
14. An alcohol with the OH group at the end of a straight chain is a _______ alcohol.
15. In 2-methyl-2-propanol, the OH group is on a carbon bonded to three methyl groups, making it a _______ alcohol.

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Preparation of alcohols

15 Fill in the Blank Questions – Preparation of Alcohols

1. _______ is used in the hydroboration-oxidation of alkenes to produce alcohols.
2. In the hydration of alkenes, _______ acid acts as the catalyst.
3. Grignard reagents react with aldehydes to form _______ alcohols.
4. Primary alcohols can be prepared by reducing _______ using lithium aluminium hydride.
5. _______ alcohol is obtained by the fermentation of sugars.
6. Ethene reacts with water in presence of phosphoric acid to form _______.
7. _______ alcohols are formed by the reaction of ketones with Grignard reagents.
8. The process of converting alkyl halides to alcohols using aqueous KOH is known as _______.
9. Sodium borohydride is used to reduce _______ to primary alcohols.
10. Alcohols can be obtained by hydrolysis of _______ esters.
11. The reduction of carboxylic acids gives _______ alcohols.
12. Methanol is industrially produced by catalytic hydrogenation of _______.
13. _______ alcohol is also known as wood alcohol.
14. Reaction of epoxides with Grignard reagents followed by hydrolysis gives _______ alcohols.
15. Phenols can be converted to alcohols by replacing the OH group with _______ followed by hydrolysis.

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Grignard Synthesis

15 Fill in the Blank Questions – Synthesis of Alcohols Using Grignard Reagents

1. Grignard reagent reacts with formaldehyde to form _______ alcohol.
2. Reaction of Grignard reagent with acetaldehyde gives a _______ alcohol.
3. Grignard reagent reacts with ketones to produce _______ alcohols.
4. To prepare tertiary alcohols, Grignard reagents react with _______.
5. The product formed from CH₃MgBr and acetone is _______ alcohol.
6. Ethylmagnesium bromide reacts with formaldehyde to yield _______.
7. Isopropyl alcohol can be synthesized by reacting Grignard reagent with _______.
8. The hydrolysis step in Grignard reaction involves addition of _______.
9. A Grignard reagent adds to ethyl formate to produce _______ alcohol.
10. Tertiary alcohols from esters need _______ mols of Grignard reagent.
11. Reaction of phenylmagnesium bromide with acetone gives _______.
12. Propan-2-ol is formed when Grignard reagent reacts with _______.
13. Primary alcohol is obtained from Grignard reagent and _______.
14. A Grignard reagent does not react with _______ unless hydrolysis is done.
15. The alcohol obtained from reaction of CH₃MgBr and methyl acetate is _______.

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Establish the reaction mechanism for the above Grignard synthetic reactions.