Bài 1:

a) \(n_{CO}=x;n_{H_2S}=y\)

\(M_X=32.0,95=30,4\rightarrow\dfrac{28x+34y}{x+y}=30,4\rightarrow2,4x=3,6y\rightarrow\dfrac{x}{y}=\dfrac{3,6}{2,4}=\dfrac{3}{2}\)

%V_CO=\(\dfrac{3}{3+2}.100=60\%\)

%\(V_{H_2S}=\dfrac{2}{3+2}.100=40\%\)

b) \(V_{CO}=12,32.\dfrac{3}{5}=7,392l\)

\(V_{H_2S}=12,32.\dfrac{2}{5}=4,928l\)

-Gọi \(V_{CO_2}=x\left(lít\right)\)

\(\overline{M}=\dfrac{44x+28.7,392+34.4,928}{x+12,32}=9.2=18\)

Giải ra x\(\approx5,9\left(lít\right)\)

Bài 2:\(n_{O_2}=x\left(mol\right)\); \(n_{O_3}=y\left(mol\right)\)

\(\overline{M}=\dfrac{32x+48y}{x+y}=18.2=36\rightarrow4x=12y\rightarrow x=3y\)

Ngoài ra 32x+48y=30

Giải 2 phương trình trên ta được: x=\(\dfrac{5}{8}\) và y=\(\dfrac{5}{24}\)

\(m_{O_2}=32x=32.\dfrac{5}{8}=20\left(gam\right)\)

\(m_{O_3}=30-20=10\left(gam\right)\)

\(M_{hh}=22,4.2=44,8\left(g/mol\right);n_{hh}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\\ \Rightarrow m_{hh}=0,25.44,8=11,2\left(g\right)\)

Đặt \(n_{O_2\left(th\text{ê}m\right)}=a\left(mol\right)\left(a>0\right)\)

\(M_{hh\left(m\text{ới}\right)}=20.2=40\left(g/mol\right)\)

Ta có: \(\left\{{}\begin{matrix}m_{hh\left(m\text{ới}\right)}=11,2+32a\left(g\right)\\n_{hh\left(m\text{ới}\right)}=0,25+a\left(mol\right)\end{matrix}\right.\)

\(\Rightarrow M_{hh\left(m\text{ới}\right)}=\dfrac{11,2+32a}{0,25+a}=40\Leftrightarrow a=0,15\left(mol\right)\left(TM\right)\)

\(\Rightarrow V_{O_2}=0,15.22,4=3,36\left(l\right)\)

\(M_X=2,5.16=40\)(g/mol)

\(\rightarrow\dfrac{V_{CO_2}}{V_{O_2}}=\dfrac{n_{CO_2}}{n_{O_2}}=\dfrac{40-32}{44-40}=2\)

Mà \(V_{CO_2}+V_{O_2}=30\left(L\right)\)

\(\rightarrow V_{CO_2}=20\left(L\right);V_{O_2}=10\left(L\right)\)

\(\rightarrow M_Y=\dfrac{20.44+10.32+32V}{V+20+10}=2,25.16=36\)

\(\rightarrow V=30\left(L\right)\)

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)`

Gọi a, b lần lượt là thể tích của SO₂ và O₂ (a,b>0)

Vì d_(SO2,O2)/H2=24 => \(\overline{M}\)= \(\frac{64a+32b}{a+b}=48\) => a=b (1)
Mà V hh= 20l => a+b=20 (2)

Từ (1) và (2)=> a=b=10 (l)

Gọi x là V_O2 cần thêm
Vì d_{hh mới/H2}=22,4 => \(\overline{M}\)=\(\frac{640+32x+320}{20+x}\)=44,8
=>x=5l
Chúc bạn học tốt

\(a)n_{O_3} = a ; n_{O_2} = b\\ M_X = 18.2 = 36(g/mol)\\ \text{Ta có : } 48a + 32b = 36(a + b)\\ \Leftrightarrow 12a = 4b \Leftrightarrow \dfrac{a}{b} = \dfrac{4}{12} = \dfrac{1}{3}(1)\\ \%V_{O_3} = \dfrac{1}{1+3}.100\% = 25\%\\ \%V_{O_2} = \dfrac{3}{1+3}.100\% = 75\%\\ b) m_X = 48a + 32b = 2,88(2)\\ (1)(2) \Rightarrow a = 0,02 ; b = 0,06\\ V_{O_3} = 0,02.22,4 = 0,448(lít) ; V_{O_2} = 0,06.22,4 = 1,344(lít)\)