Calculate the volume of gas (carbon dioxide) produced when 50g of calcium carbonate is decomposed by heating
1. Calculate the amount, in moles, of calcium carbonate reacted
Mr of CaCO₃ is 100
Amount of CaCO₃ = (50 ÷ 100) = 0.5 mol
2. Calculate the amount, in moles, of carbon dioxide formed
CaCO₃ --> CaO + CO₂
1 mol of CaCO₃ produces 1 mol of CO₂
0.5 mol of CaCO₃ produces 0.5 mol of CO₂
3. Calculate the volume of CO₂ formed
Volume of CO₂ = (0.5 x 24) dm³ = 12dm³
On the last section where did the 24 come from???
ReplyDeletein order to get from cm cubed to dm cubes you have to times it by 24 i think
DeleteMultiplying by 24 is just a rule. It is to Dow with RTP (room temperature and pressure). To convey from cm3 to dm you have to multiply by 1000. Hope this helps :)
ReplyDeleteThanks, I would have been sure what it was for.
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