Coi hỗn hợp A là C₃H_n

Ta có : M_A = 12.3 + n = 21.2 = 42

=> n = 6

n A = 8,96/22,4 = 0,4(mol)

$C_3H_6 + \dfrac{9}{2}O_2 \xrightarrow{t^o} 3CO_2 + 3H_2O$

n H2O = n CO2 = 3n A  = 0,4.3 = 1,2(mol)

$CO_2 + Ca(OH)_2 \to CaCO_3 + H_2O$
m bình tăng = m CO2 = 1,2.44 = 52,8 gam

m=89,83g .Chúc bạn học tốt 

\(n_{hh}=\dfrac{11,2}{22,4}=0,5mol\)

Gọi \(\left\{{}\begin{matrix}n_{CH_4}=x\\n_{C_2H_4}=y\end{matrix}\right.\)

\(CH_4+2O_2\rightarrow\left(t^o\right)CO_2+2H_2O\)

  x                              x                     ( mol )

\(C_2H_4+3O_2\rightarrow\left(t^o\right)2CO_2+2H_2O\)

   y                              2y                   ( mol )

\(n_{CaCO_3}=\dfrac{80}{100}=0,8mol\)

\(Ca\left(OH\right)_2+CO_2\rightarrow\left(t^o\right)CaCO_3+H_2O\)

                     0,8                0,8                      ( mol )

Ta có:

\(\left\{{}\begin{matrix}x+y=0,5\\x+2y=0,8\end{matrix}\right.\) \(\Leftrightarrow\left\{{}\begin{matrix}x=0,2\\y=0,3\end{matrix}\right.\)

\(\%V_{CH_4}=\dfrac{0,2}{0,5}.100=40\%\)

\(\%V_{C_2H_4}=100\%-40\%=60\%\)

\(m_{tăng}=m_{Ca\left(OH\right)_2}+m_{CaCO_3}=0,8.\left(74+100\right)=139,2g\)

PTHH: (C₆H₁₀O₅)_n + 6nO₂ --t^o--> 6nCO₂ + 5nH₂O

                 0,01------------------>0,06n---->0,05n

m_tăng = 44.0,06n + 18.0,05n = 49560

=> n = 14000

m_{bình tăng} = m_anken = 1,4g\(\Rightarrow a=1,4g\)

\(C_nH_{2n}+\dfrac{3n}{2}O_2\rightarrow nCO_2+nH_2O\)

\(n_{anken}=\dfrac{1,4}{14n}=\dfrac{0,1}{n}\)\(\rightarrow n_{O_2}=\dfrac{0,1}{n}.\dfrac{3n}{2}=0,15mol\)\(\Rightarrow V_{O_2}=3,36l\)

\(n_{hh}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\\ M_{hh}=14.2=28\left(\dfrac{g}{mol}\right)\)

Áp dụng sơ đồ đường chéo:

\(\dfrac{n_{C_2H_2}}{n_{C_2H_4}}=\dfrac{V_{C_2H_2}}{V_{C_2H_4}}=\dfrac{28-28}{28-26}=\dfrac{0}{2}\)

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