CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317405
Assertion : \(\mathrm{CN}^{-}\)ion is an ambident nucleophile. Reason : Nucleophiles are electron rich species.
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:
Nucleophilic species which have more than one site of reaction are called ambident nucleophiles. \(:\overline {\text{C}} \equiv \mathop {\text{N}}\limits^{ \cdot \,\, \cdot } : \leftrightarrow :{\text{C}} = \mathop {\text{N}}\limits^{..} \). Therefore, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317406
Assertion : \(\mathrm{NO}_{2},-\mathrm{CN},-\mathrm{CNO}\) act as ambident nucleophiles Reason : These consist atoms of same period
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:
Both assertion and reason are true and the reason is not the correct explanation of the assertion. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317407
Which one of the nitrogen atoms in is the most nucleophilic?
1 III
2 I
3 II
4 All three nitrogen atoms are equally strong nucleophilic centers.
Explanation:
(I) is the most nucleophilic nitrogen because it is far to carbonyl group and remaining nitrogens are nearer to carbonyl group and involve in resonance very quickly.
KCET - 2011
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317408
Among the following the strongest nucleophile is
1 \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{SH}\)
2 \(\mathrm{CH}_{3} \mathrm{COO}^{-}\)
3 \(\mathrm{CH}_{3} \mathrm{NH}_{2}\)
4 \(\mathrm{NCCH}_{2}^{-}\)
Explanation:
More the electron density on a species better nucleophile it is. \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{SH}\) is a weak acid so it readily loses a proton to form strong conjugate base, \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{~S}^{-}\), which is a strong nucleophile. (+I effect of \(\mathrm{C}_{2} \mathrm{H}_{5}\) group).
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317405
Assertion : \(\mathrm{CN}^{-}\)ion is an ambident nucleophile. Reason : Nucleophiles are electron rich species.
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:
Nucleophilic species which have more than one site of reaction are called ambident nucleophiles. \(:\overline {\text{C}} \equiv \mathop {\text{N}}\limits^{ \cdot \,\, \cdot } : \leftrightarrow :{\text{C}} = \mathop {\text{N}}\limits^{..} \). Therefore, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317406
Assertion : \(\mathrm{NO}_{2},-\mathrm{CN},-\mathrm{CNO}\) act as ambident nucleophiles Reason : These consist atoms of same period
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:
Both assertion and reason are true and the reason is not the correct explanation of the assertion. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317407
Which one of the nitrogen atoms in is the most nucleophilic?
1 III
2 I
3 II
4 All three nitrogen atoms are equally strong nucleophilic centers.
Explanation:
(I) is the most nucleophilic nitrogen because it is far to carbonyl group and remaining nitrogens are nearer to carbonyl group and involve in resonance very quickly.
KCET - 2011
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317408
Among the following the strongest nucleophile is
1 \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{SH}\)
2 \(\mathrm{CH}_{3} \mathrm{COO}^{-}\)
3 \(\mathrm{CH}_{3} \mathrm{NH}_{2}\)
4 \(\mathrm{NCCH}_{2}^{-}\)
Explanation:
More the electron density on a species better nucleophile it is. \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{SH}\) is a weak acid so it readily loses a proton to form strong conjugate base, \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{~S}^{-}\), which is a strong nucleophile. (+I effect of \(\mathrm{C}_{2} \mathrm{H}_{5}\) group).
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317405
Assertion : \(\mathrm{CN}^{-}\)ion is an ambident nucleophile. Reason : Nucleophiles are electron rich species.
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:
Nucleophilic species which have more than one site of reaction are called ambident nucleophiles. \(:\overline {\text{C}} \equiv \mathop {\text{N}}\limits^{ \cdot \,\, \cdot } : \leftrightarrow :{\text{C}} = \mathop {\text{N}}\limits^{..} \). Therefore, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317406
Assertion : \(\mathrm{NO}_{2},-\mathrm{CN},-\mathrm{CNO}\) act as ambident nucleophiles Reason : These consist atoms of same period
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:
Both assertion and reason are true and the reason is not the correct explanation of the assertion. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317407
Which one of the nitrogen atoms in is the most nucleophilic?
1 III
2 I
3 II
4 All three nitrogen atoms are equally strong nucleophilic centers.
Explanation:
(I) is the most nucleophilic nitrogen because it is far to carbonyl group and remaining nitrogens are nearer to carbonyl group and involve in resonance very quickly.
KCET - 2011
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317408
Among the following the strongest nucleophile is
1 \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{SH}\)
2 \(\mathrm{CH}_{3} \mathrm{COO}^{-}\)
3 \(\mathrm{CH}_{3} \mathrm{NH}_{2}\)
4 \(\mathrm{NCCH}_{2}^{-}\)
Explanation:
More the electron density on a species better nucleophile it is. \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{SH}\) is a weak acid so it readily loses a proton to form strong conjugate base, \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{~S}^{-}\), which is a strong nucleophile. (+I effect of \(\mathrm{C}_{2} \mathrm{H}_{5}\) group).
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317405
Assertion : \(\mathrm{CN}^{-}\)ion is an ambident nucleophile. Reason : Nucleophiles are electron rich species.
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:
Nucleophilic species which have more than one site of reaction are called ambident nucleophiles. \(:\overline {\text{C}} \equiv \mathop {\text{N}}\limits^{ \cdot \,\, \cdot } : \leftrightarrow :{\text{C}} = \mathop {\text{N}}\limits^{..} \). Therefore, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317406
Assertion : \(\mathrm{NO}_{2},-\mathrm{CN},-\mathrm{CNO}\) act as ambident nucleophiles Reason : These consist atoms of same period
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:
Both assertion and reason are true and the reason is not the correct explanation of the assertion. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317407
Which one of the nitrogen atoms in is the most nucleophilic?
1 III
2 I
3 II
4 All three nitrogen atoms are equally strong nucleophilic centers.
Explanation:
(I) is the most nucleophilic nitrogen because it is far to carbonyl group and remaining nitrogens are nearer to carbonyl group and involve in resonance very quickly.
KCET - 2011
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317408
Among the following the strongest nucleophile is
1 \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{SH}\)
2 \(\mathrm{CH}_{3} \mathrm{COO}^{-}\)
3 \(\mathrm{CH}_{3} \mathrm{NH}_{2}\)
4 \(\mathrm{NCCH}_{2}^{-}\)
Explanation:
More the electron density on a species better nucleophile it is. \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{SH}\) is a weak acid so it readily loses a proton to form strong conjugate base, \(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{~S}^{-}\), which is a strong nucleophile. (+I effect of \(\mathrm{C}_{2} \mathrm{H}_{5}\) group).
