What mass of sodium hydrogen carbonate must be heated to give 21.2 g. of sodium carbonate (Molecular weight of NaHCO3 = 84).

Question

(a) and (b) are based on the production of 21.2 g. of sodium carbonate. 

(a) What mass of sodium hydrogen carbonate must be heated to give 21.2 g. of sodium carbonate (Molecular weight of NaHCO₃ = 84). 

(b) To produce the mass of sodium hydrogen carbonate calculated in (a), what volume of carbon dioxide, measured at s.t.p., would be required. 

Answer 1

106 g of NaCO₃ is obtained from NaHCO₃ = 168 g

21.2 g of NaCO₃ is obtained from NaHCO₃

84 g of NaHCO₃ is obtained from CO₂ at STP = 22.4 L 

33.6 g of NaHCO₃ is obtained from CO₂ at STP