Please answer me this question.

17. State what an aqueous solution of NH3 is called. State how it is prepared giving reasons.

18. State why an aq. soln. of NH3              i] turns red litmus blue              ii] is a weak base and a weak electrolyte.

Dear student,
A18)i)   NH3 is a lewis base as it can donate lone pair of electron .So it has the ability to turn red litmus blue.
ii) It is a weak base  due to lack of hydroxyl ion as it is a lewis base . Since the NH3 cannot be broken into ions easily so it is a weak eletrolyte.

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