Question

How many moles of carbon dioxide are formed when 27.6g of potassium carbonate reacts? Calulate the mass of carbon dioxide formed

Answer 1

K₂CO₃ $\to$ K₂O + CO₂

moles of K₂CO₃ = 27.6/138 = 0.2 moles

so 0.2 moles of CO₂ is formed

mass of CO₂ formed = 0.2×44 = 8.8g