Question

QUESTION 6:

Question 6 Which amine forms a reasonably stable diazonium salt? NH CH CH; N-CH NH CH CH,CH,NH, H3C-N-CH.CH - = OcIII ODIV OEV

QUESTION 7:

The stronger a base, the larger its pK_b.

a.) True

b.) False

QUESTION 9:

Answer 1

Question-6 (solution)

Treatment of a primary amine with nitrous acid gives a diazonium salt. Such salts of alkylamines are unstable and immediately decompose with the evolution of nitrogen. Aromatic diazonium salts are stable at 0° but eliminate N₂ at room temperatures.

hence answer is A I

Question-7 (solution)

A large Kb value indicates the high level of dissociation of a strong base. A lower pKb value indicates a stronger base.

from formula PKb = - log kb

Answer - b) false

Question-9 (solution)

water-insoluble compounds that are insoluble in NaOH are tested with dilute hydrochloric acid (HCl). If a compound is soluble in dilute HCl, it is an amine.

mostly acylic amine not aromatic.

hence answer A I