\(C_2H_4+3O_2\rightarrow2CO_2+2H_2O\)
\(2C_3H_6+9O_2\rightarrow6CO_2+6H_2O\)
\(n_{hh}=\frac{0,672}{22,4}=0,03\left(mol\right)\)
\(n_{O2}=\frac{2,688}{22,4}=0,12\left(mol\right)\)
\(hh:C_2H_4:a\left(mol\right);C_3H_6:b\left(mol\right)\)
Giải hệ PT:
\(\left\{{}\begin{matrix}a+b=0,03\\3a+4,5b=0,12\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}a=0,01\\b=0,02\end{matrix}\right.\)
\(\%V_{C2H4}=33,33\%\Rightarrow\%V_{C3H6}=66,67\%\)
\(n_{CO2}=0,01.2+0,02.3=0,08\left(g\right)\)
\(n_{CaCO3}=n_{CO2}=0,08\left(mol\right)\)
\(\Rightarrow m_{CaCO3}=0,08.100=8\left(g\right)\)