323383
Assertion : The oxygen of - \(\mathrm{OH}\) group in alcohols is attached to \(\mathrm{sp}^{3}\) hybridised carbon. Reason : The bond angle in alcohols is \(109^{\circ} 28^{\prime}\).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The bond angle in alcohols is slightly less than the tetrahedral angle of \(109^{\circ} 28^{\prime}\). This deviation from the ideal tetrahedral angle is due to the repulsion between the unshared electron pairs of oxygen. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323384
Assertion : bond angle is less than normal tetrahedral bond angle. Reason : Lone pair-lone pair repulsion decreases bond angle.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The bond angle in a molecule or ion can be less than the normal tetrahedral bond angle (approximately \(109.5^{\circ}\) ) due to a phenomenon known as distortion or bending. In the given structure, which is of alcohols, there are two lone pairs on central oxygen that repel each other. This reduces the bond angle to \(108.9^{\circ}\). So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323385
What is the value of \(\mathrm{C}-\mathrm{O}-\mathrm{H}\) bond angle in \(\mathrm{CH}_{3}-\mathrm{OH}\) ?
1 \(107^{\circ}\)
2 \(108.9^{\circ}\)
3 \(109.5^{\circ}\)
4 \(110^{\circ}\)
Explanation:
The value of \(\mathrm{C}-\mathrm{O}-\mathrm{H}\) bond angle in \(\mathrm{CH}_{3}-\mathrm{OH}\) (methanol) is \(108.9^{\circ}\) due to repulsion between lone pair electrons of oxygen atom. It can be easily shown as below:
323383
Assertion : The oxygen of - \(\mathrm{OH}\) group in alcohols is attached to \(\mathrm{sp}^{3}\) hybridised carbon. Reason : The bond angle in alcohols is \(109^{\circ} 28^{\prime}\).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The bond angle in alcohols is slightly less than the tetrahedral angle of \(109^{\circ} 28^{\prime}\). This deviation from the ideal tetrahedral angle is due to the repulsion between the unshared electron pairs of oxygen. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323384
Assertion : bond angle is less than normal tetrahedral bond angle. Reason : Lone pair-lone pair repulsion decreases bond angle.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The bond angle in a molecule or ion can be less than the normal tetrahedral bond angle (approximately \(109.5^{\circ}\) ) due to a phenomenon known as distortion or bending. In the given structure, which is of alcohols, there are two lone pairs on central oxygen that repel each other. This reduces the bond angle to \(108.9^{\circ}\). So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323385
What is the value of \(\mathrm{C}-\mathrm{O}-\mathrm{H}\) bond angle in \(\mathrm{CH}_{3}-\mathrm{OH}\) ?
1 \(107^{\circ}\)
2 \(108.9^{\circ}\)
3 \(109.5^{\circ}\)
4 \(110^{\circ}\)
Explanation:
The value of \(\mathrm{C}-\mathrm{O}-\mathrm{H}\) bond angle in \(\mathrm{CH}_{3}-\mathrm{OH}\) (methanol) is \(108.9^{\circ}\) due to repulsion between lone pair electrons of oxygen atom. It can be easily shown as below:
323383
Assertion : The oxygen of - \(\mathrm{OH}\) group in alcohols is attached to \(\mathrm{sp}^{3}\) hybridised carbon. Reason : The bond angle in alcohols is \(109^{\circ} 28^{\prime}\).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The bond angle in alcohols is slightly less than the tetrahedral angle of \(109^{\circ} 28^{\prime}\). This deviation from the ideal tetrahedral angle is due to the repulsion between the unshared electron pairs of oxygen. So the option (3) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323384
Assertion : bond angle is less than normal tetrahedral bond angle. Reason : Lone pair-lone pair repulsion decreases bond angle.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
The bond angle in a molecule or ion can be less than the normal tetrahedral bond angle (approximately \(109.5^{\circ}\) ) due to a phenomenon known as distortion or bending. In the given structure, which is of alcohols, there are two lone pairs on central oxygen that repel each other. This reduces the bond angle to \(108.9^{\circ}\). So the option (1) is correct.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323385
What is the value of \(\mathrm{C}-\mathrm{O}-\mathrm{H}\) bond angle in \(\mathrm{CH}_{3}-\mathrm{OH}\) ?
1 \(107^{\circ}\)
2 \(108.9^{\circ}\)
3 \(109.5^{\circ}\)
4 \(110^{\circ}\)
Explanation:
The value of \(\mathrm{C}-\mathrm{O}-\mathrm{H}\) bond angle in \(\mathrm{CH}_{3}-\mathrm{OH}\) (methanol) is \(108.9^{\circ}\) due to repulsion between lone pair electrons of oxygen atom. It can be easily shown as below:
