Lượng CaO tác dụng vs nước : \(210-\left(210.10\%\right)=189\left(kg\right)=189000\left(g\right)\)
PTHH : \(CaO+H_2O->Ca\left(OH\right)_2\)
\(n_{CaO}=\dfrac{m}{M}=\dfrac{189000}{40+16}=3375\left(mol\right)\)
Có : \(n_{CaO}=n_{Ca\left(OH\right)_2}=3375\left(mol\right)\)
-> \(m_{Ca\left(OH\right)_2}=n.M=249750\left(g\right)=249,75\left(kg\right)\)