\(n_{CO_2}=\dfrac{V}{22,4}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\)
BaCO3 -to-> BaO + CO2
1 mol..........1 mol....1 mol
...................x mol....0,05 mol
Từ ptpu ta có: \(n_{BaO}=x=\dfrac{0,05.1}{1}=0,05\left(mol\right)\)
=>mBaO = n.M = 0,05.(137 + 16) = 7,65 (g)
BaCO3 \(\underrightarrow{to}\) BaO + CO2
\(n_{CO_2}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\)
\(n_{BaCO_3}=\dfrac{40}{197}\left(mol\right)\)
Theo PT: \(n_{BaCO_3}=n_{CO_2}=0,05\left(mol\right)< \dfrac{40}{197}\left(mol\right)\)
⇒ BaCO3 dư,tính theo CO2
Theo PT: \(n_{BaO}=n_{CO_2}=0,05\left(mol\right)\)
\(\Rightarrow m_{BaO}=0,05\times153=7,65\left(g\right)\)