\(n_{SO_2}=\dfrac{2,24}{22,4}=0,1mol\)
\(n_{Ca\left(OH\right)_2}=0,3.0,1=0,03mol\)
\(\Rightarrow\dfrac{n_{SO_2}}{n_{Ca\left(OH\right)_2}}=\dfrac{0,1}{0,03}=3,3>2\)
=> xảy ra pư tạo muối axit, SO2 dư
\(PTHH:2SO_2+Ca\left(OH\right)_2\left(0,03\right)\rightarrow Ca\left(HSO_3\right)_2\left(0,03\right)\)
\(m_{Ca\left(HSO_3\right)_2}=0,03.202=6,06g\).