An unknown student takes 25.0 mL sample of an unknown weak base solution with a an unknown concentration and titrates it

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answerhappygod
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An unknown student takes 25.0 mL sample of an unknown weak base solution with a an unknown concentration and titrates it

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An unknown student takes 25.0 mL sample of an unknown weak base solution with a an unknown concentration and titrates it with H2SO4 solution. At half-equivalence point the pH is 11.20. It takes 17mL of H2SO4
to reach an equivalence point. What would be the concentration of the unknown weak base sample ______ M if the pOH at equivalence point is 8.03.
Keep answer to 3 decimal places
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