\(n_{SO_2}=\dfrac{5,6}{22,4}=0,25mol\\ a)n_{NaOH}=0,1.2=0,2mol\\ T=\dfrac{0,2}{0,25}=0,8\\ \Rightarrow Tạo.NaHSO_3\\ NaOH+SO_2\rightarrow NaHSO_3\\ n_{NaHSO_3}=n_{NaOH}=0,2mol\\ m_{rắn}=0,2.84=16,8g\\ b)n_{NaOH}=0,1.4=0,4mol\\ T=\dfrac{0,4}{0,25}=1,6\\ \Rightarrow Tạo.2.muối\\n_{Na_2SO_3}=a;n_{NaHSO_3}=b\\ 2 NaOH+SO_2\rightarrow Na_2SO_3+H_2O\\ NaOH+SO_2\rightarrow NaHSO_3\\ \rightarrow\left\{{}\begin{matrix}2a+b=0,4\\a+b=0,25\end{matrix}\right.\\\Rightarrow a=0,15;b=0,1\\m_{rắn}= 0,15.126+0,1.104=29,3g\\ c)n_{NaOH}=0,1.6=0,6mol\\ T=\dfrac{0,6}{0,25}=2,4\\ \Rightarrow Tạo.Na_2SO_3\\2 NaOH+SO_2\rightarrow Na_2SO_3+H_2O\\ n_{Na_2SO_4}=n_{SO_2}=0,25mol\\ n_{NaOH}=0,25.2=0,5mol\\ m_{rắn}=0,25.126+\left(0,6-0,5\right)40=35,5g\)
