\(n_X=0,6\left(mol\right)\) có a,b,c mol \(C_2H_6;C_2H_4;C_2H_2\)
\(\Rightarrow a+b+c=0,6\left(1\right)\)
\(n_{Br2}=0,8\left(mol\right)\Rightarrow b+2c=0,8\left(2\right)\)
Trong 8,2(g) : \(n_{C2H6}=ka;n_{C2H4}=kb;n_{C2H2}=kc\)
\(\Rightarrow k\left(30a+28b+26c\right)=8,2\left(+\right)\)
\(\Rightarrow n_{Ag2C2}=0,15\left(mol\right)\)
\(C_2H_2\underrightarrow{^{AgNO3}}Ag_2C_2\)
0,15__________0,15
\(\Rightarrow kc=0,15\left(++\right)\)
\(\left(+\right)+\left(+\right)\Rightarrow k=\frac{8,2}{30a+28b+26c}=\frac{0,15}{c}\)
\(\Rightarrow8,2c=0,15.\left(30a+28b+26c\right)\)
\(\Rightarrow4,5a+4,2b-4,3c=0\left(3\right)\)
\(\left(1\right)+\left(2\right)+\left(3\right)\Rightarrow\left\{{}\begin{matrix}a=0,1\\b=0,2\\c=0,3\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}m_{C2H6}=30a=3\left(g\right)\\m_{C2H4}=28b=5,6\left(g\right)\\m_{C2H2}=26c=7,8\left(g\right)\end{matrix}\right.\)