285519
In the following pairs of halogen compounds, which compound undergoes faster\(\mathrm{S}_{\mathrm{N}} 1\) reaction?
1 (i)(ii)
2 (i)(ii)
3 (i)(ii)
4 (i)(ii)
Explanation:
(d) (i)
(Less stable)
(ii)
\(1^{\circ}\) carbocation (Less stable)
Higher the stability of the carbocation formed, higher will be the rate of \(\mathrm{S}_{\mathrm{N}} 1\) reaction.
Karnataka CET 2022
CHEMISTRY(KCET)
285520
Which one of the following chlorohydrocarbon readily undergoes solvolysis?
1 \(\mathrm{CH}_2=\mathrm{CHCl}\)
Explanation:
(a) As benzyl carbocation is the most stable due to resonance.
Karnataka CET 2022
CHEMISTRY(KCET)
285521
Identify the products\(A\) and \(B\) in the reactions:
\(R-X+\mathrm{AgCN} \rightarrow A+\mathrm{Ag} X\)
\(R-X+\mathrm{KCN} \rightarrow B+\mathrm{K} X\)
1 \(A=R \mathrm{NC}, B=R \mathrm{CN}\)
2 \(A=R \mathrm{NC}, B=R \mathrm{NC}\)
3 \(A=R-\mathrm{CN} ; B=R \mathrm{CN}\)
4 \(A=R \mathrm{CN} ; B=R \mathrm{NC}\)
Explanation:
(a)\(R-X+\mathrm{AgCN} \rightarrow R \mathrm{NC}+\mathrm{Ag} X\)
\(\mathrm{R}-X+\mathrm{KCN} \rightarrow R \mathrm{CN}+\mathrm{K} X\)
KCN is ionic and dissociates as \(\mathrm{K}^{+}\)and \(\mathrm{CN}^{-}\)ions while AgCN is mainly covalent and nitrogen is free to donate electron pair to the electrophilic carbon.
285519
In the following pairs of halogen compounds, which compound undergoes faster\(\mathrm{S}_{\mathrm{N}} 1\) reaction?
1 (i)(ii)
2 (i)(ii)
3 (i)(ii)
4 (i)(ii)
Explanation:
(d) (i)
(Less stable)
(ii)
\(1^{\circ}\) carbocation (Less stable)
Higher the stability of the carbocation formed, higher will be the rate of \(\mathrm{S}_{\mathrm{N}} 1\) reaction.
Karnataka CET 2022
CHEMISTRY(KCET)
285520
Which one of the following chlorohydrocarbon readily undergoes solvolysis?
1 \(\mathrm{CH}_2=\mathrm{CHCl}\)
Explanation:
(a) As benzyl carbocation is the most stable due to resonance.
Karnataka CET 2022
CHEMISTRY(KCET)
285521
Identify the products\(A\) and \(B\) in the reactions:
\(R-X+\mathrm{AgCN} \rightarrow A+\mathrm{Ag} X\)
\(R-X+\mathrm{KCN} \rightarrow B+\mathrm{K} X\)
1 \(A=R \mathrm{NC}, B=R \mathrm{CN}\)
2 \(A=R \mathrm{NC}, B=R \mathrm{NC}\)
3 \(A=R-\mathrm{CN} ; B=R \mathrm{CN}\)
4 \(A=R \mathrm{CN} ; B=R \mathrm{NC}\)
Explanation:
(a)\(R-X+\mathrm{AgCN} \rightarrow R \mathrm{NC}+\mathrm{Ag} X\)
\(\mathrm{R}-X+\mathrm{KCN} \rightarrow R \mathrm{CN}+\mathrm{K} X\)
KCN is ionic and dissociates as \(\mathrm{K}^{+}\)and \(\mathrm{CN}^{-}\)ions while AgCN is mainly covalent and nitrogen is free to donate electron pair to the electrophilic carbon.
285519
In the following pairs of halogen compounds, which compound undergoes faster\(\mathrm{S}_{\mathrm{N}} 1\) reaction?
1 (i)(ii)
2 (i)(ii)
3 (i)(ii)
4 (i)(ii)
Explanation:
(d) (i)
(Less stable)
(ii)
\(1^{\circ}\) carbocation (Less stable)
Higher the stability of the carbocation formed, higher will be the rate of \(\mathrm{S}_{\mathrm{N}} 1\) reaction.
Karnataka CET 2022
CHEMISTRY(KCET)
285520
Which one of the following chlorohydrocarbon readily undergoes solvolysis?
1 \(\mathrm{CH}_2=\mathrm{CHCl}\)
Explanation:
(a) As benzyl carbocation is the most stable due to resonance.
Karnataka CET 2022
CHEMISTRY(KCET)
285521
Identify the products\(A\) and \(B\) in the reactions:
\(R-X+\mathrm{AgCN} \rightarrow A+\mathrm{Ag} X\)
\(R-X+\mathrm{KCN} \rightarrow B+\mathrm{K} X\)
1 \(A=R \mathrm{NC}, B=R \mathrm{CN}\)
2 \(A=R \mathrm{NC}, B=R \mathrm{NC}\)
3 \(A=R-\mathrm{CN} ; B=R \mathrm{CN}\)
4 \(A=R \mathrm{CN} ; B=R \mathrm{NC}\)
Explanation:
(a)\(R-X+\mathrm{AgCN} \rightarrow R \mathrm{NC}+\mathrm{Ag} X\)
\(\mathrm{R}-X+\mathrm{KCN} \rightarrow R \mathrm{CN}+\mathrm{K} X\)
KCN is ionic and dissociates as \(\mathrm{K}^{+}\)and \(\mathrm{CN}^{-}\)ions while AgCN is mainly covalent and nitrogen is free to donate electron pair to the electrophilic carbon.
285519
In the following pairs of halogen compounds, which compound undergoes faster\(\mathrm{S}_{\mathrm{N}} 1\) reaction?
1 (i)(ii)
2 (i)(ii)
3 (i)(ii)
4 (i)(ii)
Explanation:
(d) (i)
(Less stable)
(ii)
\(1^{\circ}\) carbocation (Less stable)
Higher the stability of the carbocation formed, higher will be the rate of \(\mathrm{S}_{\mathrm{N}} 1\) reaction.
Karnataka CET 2022
CHEMISTRY(KCET)
285520
Which one of the following chlorohydrocarbon readily undergoes solvolysis?
1 \(\mathrm{CH}_2=\mathrm{CHCl}\)
Explanation:
(a) As benzyl carbocation is the most stable due to resonance.
Karnataka CET 2022
CHEMISTRY(KCET)
285521
Identify the products\(A\) and \(B\) in the reactions:
\(R-X+\mathrm{AgCN} \rightarrow A+\mathrm{Ag} X\)
\(R-X+\mathrm{KCN} \rightarrow B+\mathrm{K} X\)
1 \(A=R \mathrm{NC}, B=R \mathrm{CN}\)
2 \(A=R \mathrm{NC}, B=R \mathrm{NC}\)
3 \(A=R-\mathrm{CN} ; B=R \mathrm{CN}\)
4 \(A=R \mathrm{CN} ; B=R \mathrm{NC}\)
Explanation:
(a)\(R-X+\mathrm{AgCN} \rightarrow R \mathrm{NC}+\mathrm{Ag} X\)
\(\mathrm{R}-X+\mathrm{KCN} \rightarrow R \mathrm{CN}+\mathrm{K} X\)
KCN is ionic and dissociates as \(\mathrm{K}^{+}\)and \(\mathrm{CN}^{-}\)ions while AgCN is mainly covalent and nitrogen is free to donate electron pair to the electrophilic carbon.
