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The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits:
- a)geometrical isomerism
- b)both optical and geometrical isomerism
- c)optical isomerism.
- d)neither optical nor geometrical isomerism
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
The compound obtained when acetaldehyde reacts with dilute aqueous sod...
CH3CH=CHCHO is the product which is suitably substituted so will show geometrical isomer.
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The compound obtained when acetaldehyde reacts with dilute aqueous sod...
Explanation:
Geometrical isomerism:
When acetaldehyde reacts with dilute aqueous sodium hydroxide, it forms a compound known as acetal. Acetal has a carbon bonded to two oxygen atoms, leading to the possibility of geometrical isomerism. Geometrical isomerism occurs when there is restricted rotation around a bond due to the presence of bulky groups or a double bond.
Acetal formation:
Acetaldehyde reacts with dilute aqueous sodium hydroxide to form an intermediate compound, which further reacts with another molecule of acetaldehyde to form the acetal compound.
Geometrical isomerism in acetal formation:
In the acetal compound formed, the carbon atom is bonded to two oxygen atoms. Due to the presence of these two oxygen atoms, the rotation around the carbon-oxygen bonds is restricted, leading to the possibility of geometrical isomerism.
Conclusion:
Therefore, the compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits geometrical isomerism due to the presence of two oxygen atoms bonded to the same carbon atom, restricting the rotation around the carbon-oxygen bonds.
Geometrical isomerism:
When acetaldehyde reacts with dilute aqueous sodium hydroxide, it forms a compound known as acetal. Acetal has a carbon bonded to two oxygen atoms, leading to the possibility of geometrical isomerism. Geometrical isomerism occurs when there is restricted rotation around a bond due to the presence of bulky groups or a double bond.
Acetal formation:
Acetaldehyde reacts with dilute aqueous sodium hydroxide to form an intermediate compound, which further reacts with another molecule of acetaldehyde to form the acetal compound.
Geometrical isomerism in acetal formation:
In the acetal compound formed, the carbon atom is bonded to two oxygen atoms. Due to the presence of these two oxygen atoms, the rotation around the carbon-oxygen bonds is restricted, leading to the possibility of geometrical isomerism.
Conclusion:
Therefore, the compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits geometrical isomerism due to the presence of two oxygen atoms bonded to the same carbon atom, restricting the rotation around the carbon-oxygen bonds.
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The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits:a)geometrical isomerismb)both optical and geometrical isomerismc)optical isomerism.d)neither optical nor geometrical isomerismCorrect answer is option 'A'. Can you explain this answer?
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