КО197 A portion of 1.154 g Na2CO3 was treated with 25.0

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197. A portion of 1.154 g Na2CO3 was treated with 25.00 cm3 of 0.2 M HCl, the excess acid was titrated 25.40 cm3 of 0.1200 M NaOH. Calculate the mass fraction of Na2CO3 in the rigging.


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