Chemistry help

Question

True or false? If 1.0 g of NaHCO3 and 1.0 g of Na2CO3 were to each react with excess HCl, both reactions would produce identical masses of CO2(g).

Answer 1

False, because the molar masses of NaHCO3 and Na2CO3 are not the same.  Hence 1 gram is not the same number of moles for each.

1.0 g NaHCO3 x 1 mole/84 g = 0.01 moles

1.0 g Na2CO3 x 1 mole/106 g = 0.009 moles

NaHCO3 will produce a greater mass of CO2 than will Na2CO3