Calculate the percentages of na2co3 and nahco3


A 5.26g sample contains a mixture of sodium carbonate (Na2CO3,FW=105.989g/mol), sodium bicarbonate (NaHCO3, FW=84.007g/mol) andsome inert impurities. The sample is dissolved into 250.00mL ofsolution. A 50mL aliquot is extracted and titirated with .1024MHCl. It required 16.70mL of HCl to reach the first equilalence point as determined by phenolphthalein. A second 50.00mL aliquot is extracted and titrated with the same .1024M HCl and it required49.49mL of HCl to reach the second end point as determined by bromocresol green. Calculate the percentages of Na2CO3 and NaHCO3 in the sample.Hint: Phenolphthalein will indicate when only the first equivalence point happens, Bromocresol green will indicate when the second equivalence happens (titrate all species).

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Chemistry: Calculate the percentages of na2co3 and nahco3
Reference No:- TGS0839250

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