PTHH : \(S+O_2\left(t^o\right)->SO_2\) (1)
\(SO_2+H_2O->H_2SO_3\) (2)
\(n_{SO_2}=\dfrac{V_{đktc}}{22,4}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\)
Từ (1) -> \(n_S=n_{SO_2}=0,05\left(mol\right)\)
-> \(m_S=n.M=1,6\left(g\right)\)
Từ (2) -> \(n_{H_2SO_3}=n_{SO_2}=0,05\left(mol\right)\)
-> \(m_{H_2SO_3}=n.M=0,05.\left(2+32+16.3\right)=4,1\left(g\right)\)