Question

Which of the following molar ratio of NH3 and HCl in aqueous solution will constitute a buffer ? (a) 1 : 2 (c) 1 : 1 (b) 1 : 3 (d) 2 : 1 

Joshi sir comment

in (d) after reaction no. of moles of NHwill be 1 and 1 mole NH4Cl will be formed so it will be a basic buffer.

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