bài 2
\(2CO\left(a\right)+O_2-t^o->2CO_2\left(a\right)\)
\(2H_2\left(b\right)+O_2-t^o->2H_2O\left(b\right)\)
\(n_{\left(CO+H_2\right)}=\dfrac{7,84}{22,4}=0,35mol\)
Ta có HPT :
\(\left\{{}\begin{matrix}a+b=0,35\\44a+18b=10,2\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}a=0,15\\b=0,2\end{matrix}\right.\)
Vì là chất khí nên %V = %n
=> \(\%V_{CO}=\dfrac{0,15}{0,15+0,2}.100\%=42,857\%\)
=> \(\%V_{H_2}=\dfrac{0,2}{0,2+0,15}.100\%=57,143\%\)