Answer
Verified
379.5k+ views
Hint : As from the names we can conclude that acetal form is related to aldehydes and the ketal form is related to ketones. There are other forms of acetal and ketals present in nature. These are known as hemiacetals and hemiketals. These compounds play the great role in organic chemistry mainly in aldehydes and ketones reactions.
Complete Step By Step Answer:
The structure of acetal and ketal are shown here:
From the above diagram we can see that there is one H atom and two ketonic group and one alkyl chain is present in the compound called acetal and in the ketal two ketonic groups and two alkyl chains are present which is the major difference between them. In acetal there should be one hydrogen atom that has to be attached directly with the central carbon. Acetal and ketal are formed when hemiacetals and hemiketals react with a second alcohol nucleophile. Some examples of acetals are benzylidene acetal, dimethoxymethane, dioxolane, metaldehyde and paraldehyde, etc. whereas examples of ketals are mostly ketonic compounds having structure as mentioned above.
Note :
In acetal ${R^1}$ and ${R^2}$ can be same or different. The central carbon atom has four bonds to it. Therefore, it is saturated and is tetrahedral in shape. An acetal is formed when the hydroxyl group of a hemiacetal becomes protonated and is lost as water. The carbocation which is produced is attacked by a molecule of alcohol and loss of proton from the attached alcohol gives the acetal.
Complete Step By Step Answer:
The structure of acetal and ketal are shown here:
From the above diagram we can see that there is one H atom and two ketonic group and one alkyl chain is present in the compound called acetal and in the ketal two ketonic groups and two alkyl chains are present which is the major difference between them. In acetal there should be one hydrogen atom that has to be attached directly with the central carbon. Acetal and ketal are formed when hemiacetals and hemiketals react with a second alcohol nucleophile. Some examples of acetals are benzylidene acetal, dimethoxymethane, dioxolane, metaldehyde and paraldehyde, etc. whereas examples of ketals are mostly ketonic compounds having structure as mentioned above.
Note :
In acetal ${R^1}$ and ${R^2}$ can be same or different. The central carbon atom has four bonds to it. Therefore, it is saturated and is tetrahedral in shape. An acetal is formed when the hydroxyl group of a hemiacetal becomes protonated and is lost as water. The carbocation which is produced is attacked by a molecule of alcohol and loss of proton from the attached alcohol gives the acetal.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Which are the Top 10 Largest Countries of the World?
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
How do you graph the function fx 4x class 9 maths CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths