a) \(Ca\left(OH\right)_2+SO_2\rightarrow CaSO_3+H_2O\)
b) \(n_{SO_2}=\dfrac{0,112}{22,4}=0,005\left(mol\right)\); \(n_{Ca\left(OH\right)_2}=0,7.0,01=0,007\left(mol\right)\)
PTHH: \(Ca\left(OH\right)_2+SO_2\rightarrow CaSO_3+H_2O\)
0,005<-----0,005-->0,005
\(\left\{{}\begin{matrix}m_{CaSO_3}=0,005.120=0,6\left(g\right)\\m_{Ca\left(OH\right)_2\left(dư\right)}=\left(0,007-0,005\right).74=0,148\left(g\right)\end{matrix}\right.\)
a)
\(n_{SO_2}=\dfrac{0,112}{22,4}=0,005\left(mol\right)\)
\(n_{Ca\left(OH\right)_2}=0,7.0,01=0,007\left(mol\right)\)
Xét \(T=\dfrac{n_{Ca\left(OH\right)_2}}{n_{SO_2}}=\dfrac{0,007}{0,005}=1,4>1\) => Tạo muối CaSO3, Ca(OH)2 dư
PTHH: \(Ca\left(OH\right)_2+SO_2\rightarrow CaSO_3\downarrow+H_2O\)
0,005<-----0,005--->0,005
b)
Sau pư: \(\left\{{}\begin{matrix}CaSO_3:0,005\left(mol\right)\\Ca\left(OH\right)_2:0,002\left(mol\right)\end{matrix}\right.\)
=> \(\left\{{}\begin{matrix}m_{CaSO_3}=0,005.120=0,6\left(g\right)\\m_{Ca\left(OH\right)_2}=0,002.74=0,148\left(g\right)\end{matrix}\right.\)