What weight of caco3 must be decomposed to produce sufficient quantity of carbon dioxide to convert 21.2 kg of na2co3 completely into nahco3?
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Na2CO3 + CO2 + H2O ---> 2 NaHCO3
Molar mass of Na2CO3 = 23x2 + 12 + 16x3 = 106 g/mol
Molar mass of CO2 = 12 + 16x2 = 44 g/mol
If 106 kg of Na2CO3 requires 44 kg of CO2
Therefore 21.2 kg of Na2CO3 will require;
= (21.2x44)/106
= 8.8 kg of CO2
CaCO3 = CaO + CO2
Molar mass of CaCO3 = 40 + 12 + 16x3 = 100 g/mol
If 44 kg of CO2 is produced from 100 kg of CaCO3
Therefore 8.8 kg of CO2 will be produced from;
= (8.8x100)/44
= 20 kg
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