2SO2 + O2 \(\underrightarrow{to}\) 2SO3 (1)
SO3 + H2O → H2SO4 (2)
\(n_{SO_2}=\dfrac{8}{22,4}=\dfrac{5}{14}\left(mol\right)\)
\(m_{ddH_2SO_4.60\%}=52,7\times1,5=79,05\left(g\right)\)
\(\Rightarrow m_{H_2SO_4.60\%}=79,05\times60\%=47,43\left(g\right)\)
Theo PT1: \(n_{SO_3}=n_{SO_2}=\dfrac{5}{14}\left(mol\right)\)
\(\Rightarrow m_{SO_3}=\dfrac{5}{14}\times80=\dfrac{200}{7}\left(g\right)\)
Theo PT2: \(n_{H_2SO_4}tt=n_{SO_3}=\dfrac{5}{14}\left(mol\right)\)
\(\Rightarrow m_{H_2SO_4}tt=\dfrac{5}{14}\times98=35\left(g\right)\)
\(m_{H_2SO_4}mới=35+47,43=82,43\left(g\right)\)
\(m_{ddH_2SO_4}mới=\dfrac{200}{7}+79,05\approx107,62\left(g\right)\)
\(\Rightarrow C\%_{ddH_2SO_4}mới=\dfrac{82,43}{107,62}\times100\%\approx76,59\%\)
