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\(m_{hh}=M_{hh}.n_{hh}=17.2.2.0,1=3,44\left(g\right)\)
Gọi x, y lần lượt là số mol CO, O2
\(\left\{{}\begin{matrix}x+y=0,1\\28x+32y=3,44\end{matrix}\right.\)
=>\(\left\{{}\begin{matrix}x=-0,06\\y=0,16\end{matrix}\right.\)
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a) \(M_X=19.2=38\left(g/mol\right)\)
`=>` \(d_{X/kk}=\dfrac{38}{29}=1,310345\)
b) \(m_X=0,4.38=15,2\left(g\right)\)
Gọi \(\left\{{}\begin{matrix}n_{O_2}=x\left(mol\right)\\n_{CO_2}=y\left(mol\right)\end{matrix}\right.\)
`=>` \(\left\{{}\begin{matrix}32x+44y=15,2\\x+y=0,4\end{matrix}\right.\Leftrightarrow x=y=0,2\)
\(m_Y=0,1.28+15,2=18\left(g\right)\)
`=>` \(\left\{{}\begin{matrix}\%m_{N_2}=\dfrac{0,1.28}{18}.100\%=15,56\%\\\%m_{O_2}=\dfrac{0,2.32}{18}.100\%=35,56\%\\\%m_{CO_2}=100\%-15,56\%-35,56\%=48,88\%\end{matrix}\right.\)
b) \(M_{hh}=4.10=40\left(g/mol\right)\)
Gọi \(n_{NO_2}=a\left(mol\right)\)
`=>` \(\left\{{}\begin{matrix}m_{hh}=18+46a\left(g\right)\\n_{hh}=0,5+0,1+a=0,6+a\left(mol\right)\end{matrix}\right.\)
`=>` \(M_{hh}=\dfrac{m_{hh}}{n_{hh}}=\dfrac{18+46a}{0,6+a}=40\)
`=> a = 1`
`=> V_{NO_2(đktc)} = 1.22,4 = 22,4 (l)`
\(Coi: n_{Cl_2} = 1(mol) \to n_{O_2} = 2(mol)\\ \%V_{Cl_2} = \dfrac{1}{1+2}.100\% = 33,33\%\\ \%V_{O_2} = 100\% -33,33\% = 66,67\%\\ M_A = \dfrac{1.71+2.32}{1+2}=45(g/mol)\\ d_{A/H_2} = \dfrac{45}{2} = 22,5\)
\(\text{Trong 6,72 lít khí A : }m_A = 45.\dfrac{6,72}{22,4}=13,5(gam)\)
nA = 6.72/22.4 = 0.3 (mol)
=> nH2 = 0.1 ( mol )
nO2 = 0.2 ( mol )
%VH2 = 0.1 / 0.3 * 100% = 33.33%
%VO2 = 66.67%
%mH2 = 0.1 * 2 / ( 0.1 * 2 + 0.2 * 32 ) * 100% = 3.03%
%mO2 = 96.67%
d A / H2 = ( 0.1 * 2 + 0.2 * 32) / 0.3 : 2 = 11
a)
$n_{Cl_2} : n_{O_2} = 1 : 2$
Suy ra :
$\%V_{Cl_2} = \dfrac{1}{1 + 2}.100\% = 33,33\%$
$\%V_{O_2} = \dfrac{2}{1 + 2}.100\% = 66,67\%$
b)
Coi $n_{Cl_2} = 1 (mol) \Rightarrow n_{O_2} = 2(mol)$
$\%m_{Cl_2} = \dfrac{1.71}{1.71 + 2.32}.100\% = 52,59\%$
$\%m_{O_2} = 100\% -52,59\% = 47,41\%$
c)
$M_A = \dfrac{71.1 + 32.2}{1 + 2} = 45(g/mol)$
$d_{A/B} = \dfrac{45}{28} = 1,607$
Giả sử có 1 mol khí Cl2, 2 mol khí O2
a) \(\left\{{}\begin{matrix}\%V_{Cl_2}=\dfrac{1}{1+2}.100\%=33,33\%\\\%V_{O_2}=\dfrac{2}{1+2}.100\%=66,67\%\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\%m_{Cl_2}=\dfrac{1.71}{1.71+2.32}.100\%=52,59\%\\\%m_{O_2}=\dfrac{2.32}{1.71+2.32}.100\%=47,41\%\end{matrix}\right.\)
b) \(\overline{M}=\dfrac{1.71+2.32}{1+2}=45\left(g/mol\right)\)
=> \(d_{A/H_2}=\dfrac{45}{2}=22,5\)
c) \(n_A=\dfrac{6,72}{22,4}=0,3\left(mol\right)\)
=> mA = 0,3.45 = 13,5 (g)
Ta có: \(n_X=\dfrac{8,96}{22,4}=0,4\left(mol\right)\)
Gọi: \(\left\{{}\begin{matrix}n_{H_2}=x\left(mol\right)\\n_{CO_2}=y\left(mol\right)\end{matrix}\right.\) ⇒ x + y = 0,4 (mol) (1)
\(d_{X/NO_2}=0,5\Rightarrow M_X=0,5.46=23\left(g/mol\right)\)
⇒ mX = 0,4.23 = 9,2 (g)
⇒ 2x + 44y = 9,2 (2)
Từ (1) và (2) \(\Rightarrow\left\{{}\begin{matrix}x=0,2\left(mol\right)\\y=0,2\left(mol\right)\end{matrix}\right.\)
\(M_{hh}=2.17,2=34,4g/mol\)
Khối lượng hỗn hợp là: \(m_{1hh}=n_{hh}.M_{hh}=0,1.34,4=3,44g\)
Đặt \(\hept{\begin{cases}x\left(mol\right)=CO\\y\left(mol\right)=O_2\end{cases}}\)
Có \(\hept{\begin{cases}x+y=0,1\\28x+32y=3,44\end{cases}}\)
\(\rightarrow\hept{\begin{cases}x=-0,06\\y=0,16\end{cases}}\)
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