\(n_S=\dfrac{4.8}{32}=0.15\left(mol\right)\)
\(n_{O_2}=\dfrac{5.6}{22.4}=0.25\left(mol\right)\)
\(S+O_2\underrightarrow{t^0}SO_2\)
\(0.15..0.15...0.15\)
\(V_{khí}=V_{O_2\left(dư\right)}+V_{SO_2}=\left(0.25-0.15\right)\cdot22.4+0.15\cdot22.4=5.6\left(l\right)\)