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A buffer solution is 0.359M in HNO2 and 0.331M in KNO2. If Ka for HNO2 is 4.5104, what is the pH of this buffer solution?

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A buffer solution is 0.359M in HNO2 and 0.331M in KNO2. If Ka for HNO2 is 4.5104, what is the pH of this buffer solution? pH=

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