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The buffer capacity is maximum when:

Option: 1

one mole of NH4Cl is added to two moles of NH4OH


Option: 2

one mole of NH4Cl is added to one moles of NH4OH


Option: 3

one mole of NH4Cl is added to one moles of NaOH


Option: 4

one mole of Nafor base buffer under above conditionCl is added to one moles of NaOH


Answers (1)

best_answer

Buffer capacity is maximum when [salt] = [base].
i.e., pOH = pKb for base buffer under above condition,the buffer is called efficient.
Therefore,option(2) is correct.

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manish

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