Gọi \(\left\{{}\begin{matrix}n_{SO_2}=a\left(mol\right)\\n_{SO_3}=b\left(mol\right)\end{matrix}\right.\)
\(d_A\)/O2=2,25\(\Rightarrow M_A=72đvC\)
\(\Rightarrow\dfrac{64a+80b}{a+b}=72\)
\(\Rightarrow64a+80b=72a+72b\)
\(\Rightarrow a=b\)
\(\%V_{SO_2}=\%V_{SO_3}=\dfrac{a}{a+b}\cdot100\%=50\%\)
\(\%m_{SO_2}=\dfrac{64a}{64a+80b}\cdot100\%=\dfrac{64a}{64a+80b}\cdot100\%=44,44\%\)
\(\%m_{SO_3}=100\%-44,44\%=55,56\%\)