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which of the following solution is a buffer? a solution containing Hf and NaOH, NH3 and NH4+, HCN and HNO3?
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which of the following solution is a buffer? a solution containing Hf and NaOH, NH3 and NH4+, HCN and HNO3?

User Levans
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The answer is NH3 an NH4+. Buffer solutions contain a weak base and its conjugate acid or a weak acid and its conjugate base. NH3 is a weak base and NH4+ is its conjugate acid.
User Futuraprime
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