
Given the reaction of N,N-dimethylaniline ('A') with NaNO2 and HX to form 'B', the correct statements are:
(1) The electrophile involved in the reaction is NO+.
(3) The reaction occurs at low temperature.
(4) The product 'B' formed in the above reaction is p-nitroso compound at low temperature.
Explanation:
* The reaction is a diazotization reaction specific to tertiary aromatic amines.
* NaNO2 and HX generate the nitrosonium ion (NO+), which is the electrophile.
* Diazotization reactions are performed at low temperatures to prevent decomposition of intermediates.
* The product formed is a p-nitroso compound due to electrophilic aromatic substitution at the para position.
Statement (2) is incorrect because the product is a p-nitroso compound, not an N-nitroso ammonium compound.
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)
