23. Решение задачки по химии №52

5. 40 ml (accurately) of HClO4 solution were added to a solution containing 0.3165 Na2CO3 of chemically pure grade. The solution was boiled to remove CO2 and 19.68 ml of NaOH were used to titrate the excess HClO4 (in the additional titration, 24.92 ml of NaOH solution react with 25.19 ml of HClO4). Determine the molar concentration of the HClO4 solution.

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