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  • Calculate the pH of 0.1 M NH3 solution.Option: 1 10Option: 2 11.12

Calculate the pH of 0.1 M NH3 solution.

Option: 1

10


Option: 2

11.12


Option: 3

111.2


Option: 4

22.24


Answers (1)

best_answer

NH3 is a weak base,
\\\mathrm{so,\: pOH_{weak\: base}\: =\:\frac{1}{2}(pK_{b}\: -\: log\: C)}\\\\\mathrm{=\frac{1}{2}(4.76-log0.1)}\\\\\mathrm{=\frac{1}{2}(4.76+1)=2.88}\\\\\mathrm{so,pH_{weak\: base}=14-2.88=11.12}

Therefore, Option(2) is correct

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