324260
In laboratory, benzene diazonium chloride is not isolated in the crystalline solid state because in solid state it
1 explodes
2 is readily oxidised
3 is readily reduced
4 is polymerised
Explanation:
It is unstable and explodes in the solid state.
CHXII13:AMINES
324261
Action of \(\mathrm{NaNO}_{2}\) with dilute HCl on \(\mathrm{ArNH}_{2}\) yields \(\mathrm{ArN}_{2}^{+} \mathrm{Cl}^{-}\). A similar reaction with cyclohexylamine will yield
1 benzenediazonium chloride
2 nitrosocyclohexane
3 nitrocyclohexane
4 cyclohexanol.
Explanation:
Aromatic primary amines react with nitrous acid at 273 - 278 K to form are diazonium salts. On the other hand, aliphatic primary amines react with cold nitrous acid to give alcohols with evolution of \(\mathrm{N}_{2}\) gas.
CHXII13:AMINES
324262
Benzene diazonium chloride is the product when aniline is treated with
1 \(\mathrm{NaNO}_{2}\) and \(\mathrm{HCl}\) at \(0-5^{\circ} \mathrm{C}\)
2 \(\mathrm{HNO}_{3}\) and \(\mathrm{HCl}\) at \(4^{\circ} \mathrm{C}\)
3 \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}\) at \(4^{0} \mathrm{C}\)
324263
Consider the following compounds: (i) p-methyl aniline (ii) N, N-dimethylaniline (iii) N-ethyl aniline (iv) \(\mathrm{N}\)-ethyl-N-methyl aniline The compounds which do not form diazonium salt with ice-cold \(\mathrm{NaNO}_{2}\) and \(\mathrm{HCl}\) are:
1 (i), (ii) and (iii)
2 (ii), (iii) and (iv)
3 (i), (iii) and (iv)
4 (ii) and (iv)
Explanation:
Diazonium salt is formed when the \(-\mathrm{NH}_{2}\) group on benzene is free and not substituted. So, only p-methyl aniline forms.
CHXII13:AMINES
324264
Which of the following reactants combine to produce \(\mathrm{C}_{6} \mathrm{H}_{6}, \mathrm{~N}_{2}\) and HCl ?
1 \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~N}_{2} \mathrm{Cl}\), Hot \(\mathrm{H}_{2} \mathrm{O}\)
The replacement of the diazo group by hydrogen or the reduction of diazonium salts to arenes (hydrocarbons) can be carried out by using \(\mathrm{H}_{3} \mathrm{PO}_{2}\) or phosphinic acid at room temperature preferably in presence of \(\mathrm{Cu}(\mathrm{I})\) salts as a catalyst.
324260
In laboratory, benzene diazonium chloride is not isolated in the crystalline solid state because in solid state it
1 explodes
2 is readily oxidised
3 is readily reduced
4 is polymerised
Explanation:
It is unstable and explodes in the solid state.
CHXII13:AMINES
324261
Action of \(\mathrm{NaNO}_{2}\) with dilute HCl on \(\mathrm{ArNH}_{2}\) yields \(\mathrm{ArN}_{2}^{+} \mathrm{Cl}^{-}\). A similar reaction with cyclohexylamine will yield
1 benzenediazonium chloride
2 nitrosocyclohexane
3 nitrocyclohexane
4 cyclohexanol.
Explanation:
Aromatic primary amines react with nitrous acid at 273 - 278 K to form are diazonium salts. On the other hand, aliphatic primary amines react with cold nitrous acid to give alcohols with evolution of \(\mathrm{N}_{2}\) gas.
CHXII13:AMINES
324262
Benzene diazonium chloride is the product when aniline is treated with
1 \(\mathrm{NaNO}_{2}\) and \(\mathrm{HCl}\) at \(0-5^{\circ} \mathrm{C}\)
2 \(\mathrm{HNO}_{3}\) and \(\mathrm{HCl}\) at \(4^{\circ} \mathrm{C}\)
3 \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}\) at \(4^{0} \mathrm{C}\)
324263
Consider the following compounds: (i) p-methyl aniline (ii) N, N-dimethylaniline (iii) N-ethyl aniline (iv) \(\mathrm{N}\)-ethyl-N-methyl aniline The compounds which do not form diazonium salt with ice-cold \(\mathrm{NaNO}_{2}\) and \(\mathrm{HCl}\) are:
1 (i), (ii) and (iii)
2 (ii), (iii) and (iv)
3 (i), (iii) and (iv)
4 (ii) and (iv)
Explanation:
Diazonium salt is formed when the \(-\mathrm{NH}_{2}\) group on benzene is free and not substituted. So, only p-methyl aniline forms.
CHXII13:AMINES
324264
Which of the following reactants combine to produce \(\mathrm{C}_{6} \mathrm{H}_{6}, \mathrm{~N}_{2}\) and HCl ?
1 \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~N}_{2} \mathrm{Cl}\), Hot \(\mathrm{H}_{2} \mathrm{O}\)
The replacement of the diazo group by hydrogen or the reduction of diazonium salts to arenes (hydrocarbons) can be carried out by using \(\mathrm{H}_{3} \mathrm{PO}_{2}\) or phosphinic acid at room temperature preferably in presence of \(\mathrm{Cu}(\mathrm{I})\) salts as a catalyst.
324260
In laboratory, benzene diazonium chloride is not isolated in the crystalline solid state because in solid state it
1 explodes
2 is readily oxidised
3 is readily reduced
4 is polymerised
Explanation:
It is unstable and explodes in the solid state.
CHXII13:AMINES
324261
Action of \(\mathrm{NaNO}_{2}\) with dilute HCl on \(\mathrm{ArNH}_{2}\) yields \(\mathrm{ArN}_{2}^{+} \mathrm{Cl}^{-}\). A similar reaction with cyclohexylamine will yield
1 benzenediazonium chloride
2 nitrosocyclohexane
3 nitrocyclohexane
4 cyclohexanol.
Explanation:
Aromatic primary amines react with nitrous acid at 273 - 278 K to form are diazonium salts. On the other hand, aliphatic primary amines react with cold nitrous acid to give alcohols with evolution of \(\mathrm{N}_{2}\) gas.
CHXII13:AMINES
324262
Benzene diazonium chloride is the product when aniline is treated with
1 \(\mathrm{NaNO}_{2}\) and \(\mathrm{HCl}\) at \(0-5^{\circ} \mathrm{C}\)
2 \(\mathrm{HNO}_{3}\) and \(\mathrm{HCl}\) at \(4^{\circ} \mathrm{C}\)
3 \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}\) at \(4^{0} \mathrm{C}\)
324263
Consider the following compounds: (i) p-methyl aniline (ii) N, N-dimethylaniline (iii) N-ethyl aniline (iv) \(\mathrm{N}\)-ethyl-N-methyl aniline The compounds which do not form diazonium salt with ice-cold \(\mathrm{NaNO}_{2}\) and \(\mathrm{HCl}\) are:
1 (i), (ii) and (iii)
2 (ii), (iii) and (iv)
3 (i), (iii) and (iv)
4 (ii) and (iv)
Explanation:
Diazonium salt is formed when the \(-\mathrm{NH}_{2}\) group on benzene is free and not substituted. So, only p-methyl aniline forms.
CHXII13:AMINES
324264
Which of the following reactants combine to produce \(\mathrm{C}_{6} \mathrm{H}_{6}, \mathrm{~N}_{2}\) and HCl ?
1 \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~N}_{2} \mathrm{Cl}\), Hot \(\mathrm{H}_{2} \mathrm{O}\)
The replacement of the diazo group by hydrogen or the reduction of diazonium salts to arenes (hydrocarbons) can be carried out by using \(\mathrm{H}_{3} \mathrm{PO}_{2}\) or phosphinic acid at room temperature preferably in presence of \(\mathrm{Cu}(\mathrm{I})\) salts as a catalyst.
324260
In laboratory, benzene diazonium chloride is not isolated in the crystalline solid state because in solid state it
1 explodes
2 is readily oxidised
3 is readily reduced
4 is polymerised
Explanation:
It is unstable and explodes in the solid state.
CHXII13:AMINES
324261
Action of \(\mathrm{NaNO}_{2}\) with dilute HCl on \(\mathrm{ArNH}_{2}\) yields \(\mathrm{ArN}_{2}^{+} \mathrm{Cl}^{-}\). A similar reaction with cyclohexylamine will yield
1 benzenediazonium chloride
2 nitrosocyclohexane
3 nitrocyclohexane
4 cyclohexanol.
Explanation:
Aromatic primary amines react with nitrous acid at 273 - 278 K to form are diazonium salts. On the other hand, aliphatic primary amines react with cold nitrous acid to give alcohols with evolution of \(\mathrm{N}_{2}\) gas.
CHXII13:AMINES
324262
Benzene diazonium chloride is the product when aniline is treated with
1 \(\mathrm{NaNO}_{2}\) and \(\mathrm{HCl}\) at \(0-5^{\circ} \mathrm{C}\)
2 \(\mathrm{HNO}_{3}\) and \(\mathrm{HCl}\) at \(4^{\circ} \mathrm{C}\)
3 \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}\) at \(4^{0} \mathrm{C}\)
324263
Consider the following compounds: (i) p-methyl aniline (ii) N, N-dimethylaniline (iii) N-ethyl aniline (iv) \(\mathrm{N}\)-ethyl-N-methyl aniline The compounds which do not form diazonium salt with ice-cold \(\mathrm{NaNO}_{2}\) and \(\mathrm{HCl}\) are:
1 (i), (ii) and (iii)
2 (ii), (iii) and (iv)
3 (i), (iii) and (iv)
4 (ii) and (iv)
Explanation:
Diazonium salt is formed when the \(-\mathrm{NH}_{2}\) group on benzene is free and not substituted. So, only p-methyl aniline forms.
CHXII13:AMINES
324264
Which of the following reactants combine to produce \(\mathrm{C}_{6} \mathrm{H}_{6}, \mathrm{~N}_{2}\) and HCl ?
1 \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~N}_{2} \mathrm{Cl}\), Hot \(\mathrm{H}_{2} \mathrm{O}\)
The replacement of the diazo group by hydrogen or the reduction of diazonium salts to arenes (hydrocarbons) can be carried out by using \(\mathrm{H}_{3} \mathrm{PO}_{2}\) or phosphinic acid at room temperature preferably in presence of \(\mathrm{Cu}(\mathrm{I})\) salts as a catalyst.
324260
In laboratory, benzene diazonium chloride is not isolated in the crystalline solid state because in solid state it
1 explodes
2 is readily oxidised
3 is readily reduced
4 is polymerised
Explanation:
It is unstable and explodes in the solid state.
CHXII13:AMINES
324261
Action of \(\mathrm{NaNO}_{2}\) with dilute HCl on \(\mathrm{ArNH}_{2}\) yields \(\mathrm{ArN}_{2}^{+} \mathrm{Cl}^{-}\). A similar reaction with cyclohexylamine will yield
1 benzenediazonium chloride
2 nitrosocyclohexane
3 nitrocyclohexane
4 cyclohexanol.
Explanation:
Aromatic primary amines react with nitrous acid at 273 - 278 K to form are diazonium salts. On the other hand, aliphatic primary amines react with cold nitrous acid to give alcohols with evolution of \(\mathrm{N}_{2}\) gas.
CHXII13:AMINES
324262
Benzene diazonium chloride is the product when aniline is treated with
1 \(\mathrm{NaNO}_{2}\) and \(\mathrm{HCl}\) at \(0-5^{\circ} \mathrm{C}\)
2 \(\mathrm{HNO}_{3}\) and \(\mathrm{HCl}\) at \(4^{\circ} \mathrm{C}\)
3 \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}\) at \(4^{0} \mathrm{C}\)
324263
Consider the following compounds: (i) p-methyl aniline (ii) N, N-dimethylaniline (iii) N-ethyl aniline (iv) \(\mathrm{N}\)-ethyl-N-methyl aniline The compounds which do not form diazonium salt with ice-cold \(\mathrm{NaNO}_{2}\) and \(\mathrm{HCl}\) are:
1 (i), (ii) and (iii)
2 (ii), (iii) and (iv)
3 (i), (iii) and (iv)
4 (ii) and (iv)
Explanation:
Diazonium salt is formed when the \(-\mathrm{NH}_{2}\) group on benzene is free and not substituted. So, only p-methyl aniline forms.
CHXII13:AMINES
324264
Which of the following reactants combine to produce \(\mathrm{C}_{6} \mathrm{H}_{6}, \mathrm{~N}_{2}\) and HCl ?
1 \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~N}_{2} \mathrm{Cl}\), Hot \(\mathrm{H}_{2} \mathrm{O}\)
The replacement of the diazo group by hydrogen or the reduction of diazonium salts to arenes (hydrocarbons) can be carried out by using \(\mathrm{H}_{3} \mathrm{PO}_{2}\) or phosphinic acid at room temperature preferably in presence of \(\mathrm{Cu}(\mathrm{I})\) salts as a catalyst.
