An impure sample of sodium carbonate,Na2CO3,is titrated with 0.113 M HCl according to the reaction below.
2 HCl(aq) + Na2CO3(aq)
CO2(g) + H2O(
) + 2 NaCl(aq)
What is the percent of Na2CO3 in a 0.613 g sample if the titration requires 26.14 mL of HCl? The molar mass of Na2CO3 is 106.0 g/mol.
A) 0.295%
B) 15.7%
C) 25.5%
D) 51.1%
E) 67.9%
Correct Answer:
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