A 0.4126-g sample of primary-standard Na₂CO, was treated with 40.00 mL of dilute perchloric acid. The solution was boiled to remove CO₂, following which the excess HCIO, was back-titrated with 9.20 mL of dilute NaOH. In a separate experiment, it was estab- lished that 26.93 mL of the HCIO, neutralized the NaOH in a 25.00-ml portion. Calculate the molari- ties of the HCIO, and NaOH.

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A 0.4126-g sample of primary-standard Na₂CO, was
treated with 40.00 mL of dilute perchloric acid. The
solution was boiled to remove CO₂, following which
the excess HCIO, was back-titrated with 9.20 mL of
dilute NaOH. In a separate experiment, it was estab-
lished that 26.93 mL of the HCIO, neutralized the
NaOH in a 25.00-ml portion. Calculate the molari-
ties of the HCIO, and NaOH.
Transcribed Image Text:A 0.4126-g sample of primary-standard Na₂CO, was treated with 40.00 mL of dilute perchloric acid. The solution was boiled to remove CO₂, following which the excess HCIO, was back-titrated with 9.20 mL of dilute NaOH. In a separate experiment, it was estab- lished that 26.93 mL of the HCIO, neutralized the NaOH in a 25.00-ml portion. Calculate the molari- ties of the HCIO, and NaOH.
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