A 50 mL sample of NaHCO3 and Na2CO3 is titrated with 12 mL, 0.2 M H₂SO4 using methyl orange indicator to reach end point.

Question

A 50 mL sample of NaHCO3 and Na2CO3 is titrated with
12 mL, 0.2 M H₂SO4 using methyl orange indicator to
reach end point. Another 50 mL of same sample
solution needs 4 mL, 0.2 M H₂SO4 using
phenolphthalein indicator. Ratio of m moles of NaHCO3
to Na₂CO3 in the sample is _______.

Kunduz · Accepted Answer

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