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1M HN02 is titrated with a NaOH solution. The final volume of this solution is 2L. Ka = 4.5 x 10^-4. Determine the pH if

1M HN02 is titrated with a NaOH solution. The final volume of this solution is 2L. Ka = 4.5 x 10^-4. Determine the pH if the concentration of NaOH is 0.4M.

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