Gọi số mol Cl2, O2 là a, b (mol)
=> \(\left\{{}\begin{matrix}71a+32b=23,8\\\overline{M}_A=\dfrac{23,8}{a+b}=11,9.4=47,6\left(g/mol\right)\end{matrix}\right.\)
=> a = 0,2 (mol); b = 0,3 (mol)
=> \(\left\{{}\begin{matrix}\%V_{Cl_2}=\dfrac{0,2}{0,2+0,3}.100\%=40\%\\\%V_{O_2}=\dfrac{0,3}{0,2+0,3}.100\%=60\%\end{matrix}\right.\)