How many moles of carbon dioxide do you think would be formed from 4.0 mol of sodium hydrogen carbonate?

Case 1 : Heating of sodium hydrogen carbonate to form carbon dioxide

2NaHCO₃ → Na₂CO₃ + H₂O + CO₂
Mole ratio NaHCO₃ : CO₂ = 2 : 1
No. of moles of CO₂ formed = (4.0 mol) × (1/2) = 2.0 mol


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Case 2 : Reaction of sodium hydrogen carbonate with dilute acid to form carbon dioxide

NaHCO₃ + H⁺ → Na⁺ + H₂O + CO₂
Mole ratio NaHCO₃ : CO₂ = 1 : 1
No. of moles of CO₂ formed = (4.0 mol) × 1 = 4.0 mol