CH4+2O2-to>CO2+2H2O

x-----------2x

C2H4+3O2-to>2CO2+2H2O

y------------3y

=>\(\left\{{}\begin{matrix}x+y=0,25\\2x+3y=0,6\end{matrix}\right.\)

=>x=0,15 mol

     y=0,1 mol

=>%CH4=\(\dfrac{0,15.24,79}{6,1975}\).100=60%

=>%C2H4=40%

=>VCO2=(0,15+0,2).24,79=8,6765l

\(V_{O_2}=0,25.22,4=5,6\left(l\right)\)

\(V_{N_2}=0,1.22,4=2,24\left(l\right)\)

\(V_{CO_2}=0,45.22,4=10,08\left(l\right)\)

\(V_{hh}=5,6+2,24+10,08=17,92\left(l\right)\)

$V_{hh}=22,4(0,25+0,1+0,45)=17,92(lít)$

\(n_{O_2}=\dfrac{6,72}{22,4}=0,3\left(mol\right)\\ n_{CO_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)

PTHH:

2CO + O₂ --t^o--> 2CO₂

0,2<---0,1<--------0,2

2H₂ + O₂ --t^o--> 2H₂O

0,4<--0,2<-------0,2

\(\Rightarrow\left\{{}\begin{matrix}\%V_{CO}=\dfrac{0,2}{0,2+0,4}.100\%=33,33\%\\\%V_{H_2}=100\%-33,33\%=66,67\%\end{matrix}\right.\)

\(n_{CO_2}=\dfrac{6,72}{22,4}=0,3\left(mol\right)\\ n_{O_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)

PTHH: 2CO + O₂ --t^o--> 2CO₂

            0,3<--0,15<------0,3

            2H₂ + O₂ --t^o--> 2H₂O

            0,1<--0,05

\(\Rightarrow\left\{{}\begin{matrix}\%V_{CO}=\%n_{CO}=\dfrac{0,3}{0,3+0,1}.100\%=75\%\\\%V_{H_2}=100\%-75\%=25\%\end{matrix}\right.\)

\(a.m_{Mg}=0,1.24=2,4\left(g\right)\\ m_{Ca}=0,2.40=8\left(g\right)\\ b.n_{hh}=\dfrac{2,8}{28}+\dfrac{13,2}{44}=0,4\left(mol\right)\\ \Rightarrow V_{hh}=0,4.22,4=8.96\left(l\right)\)

\(a.n_{CO_2}=\dfrac{4,4}{44}=0,1\left(mol\right);n_{O_2}=\dfrac{0,6.10^{23}}{6.10^{23}}=0,1\left(mol\right)\\ V_{hh}=\left(0,5+1,5+0,1+0,1\right).22,4=49,28\left(l\right)\\ b.m_{hh}=0,5.28+1,5.2+4,4+0,1.32=24,6\left(g\right)\)

a, V_{N\(_2\)} ( đktc ) = 0,5 . 22,4 = 11,2 lít

V_{H\(_2\)}  = 1,5 . 22,4 = 33,6 lít

\(n_{CO_2}=\dfrac{4,4}{44}=0,1\) ( mol )

=> \(V_{CO_2}=0,1.22,4=2,24\) ( lít )

\(n_{O_2}=\dfrac{0,6.10^{23}}{6.10^{23}}=0,1\) ( mol )

=> V_{\(O_2\)} = 0,1 .22,4 = 2,24 lít

=> V_hh = 11,2 + 33,6 + 2,24 + 2,24 = 49,28 lít

b, \(m_{N_2}=0,5.28=14\) ( g )

\(m_{H_2}=1,5.2=3\) ( g )

\(m_{CO_2}=0,1.44=4,4\) ( g )

\(m_{O_2}=0,1.32=3,2\) (g)

\(m_{hh}=14+3+4,4+3,2=24,6\) ( g )

ta có: n_Cl2=\(\frac{7,1}{71}=0,1mol\)

\(V_{Cl2}=0,1.22,4=2,24\left(l\right)\)

\(n_{CO2}=\frac{8,8}{44}=0,2\left(mol\right)\)

\(V_{CO2}=0,2.22,4=4,48\left(l\right)\)

\(n_{NO2}=\frac{4,6}{46}=0,1\left(mol\right)\)

\(V_{NO2}=0,1.22,4=2,24\left(l\right)\)

\(n_{h^2}=0,1+0,2+0,1=0,4\left(mol\right)\)

\(V_{h^2}=2,24+2,24+4,48=8,96\left(l\right)\)

b) ta có \(n_{O2}=\frac{16}{32}=0,5\left(mol\right)\)

\(n_{N2}=\frac{14}{28}=0,5\left(mol\right)\)

\(\Leftrightarrow n_{h^2}=0,5+0,5=1\left(mol\right)\)

c) vì \(S=n.6.10^{23}\Rightarrow n=\frac{S}{6.10^{23}}\)

\(n_{N2}=\frac{1,5.10^{23}}{6.10^{23}}=0,25\left(mol\right)\)

\(V_{N2}=0,25.22,4=5,6\left(l\right)\)

\(n_{CO2}=\frac{9.10^{23}}{6.10^{23}}=1,5\left(mol\right)\)

\(V_{CO2}=1,5.22,4=33,6\left(l\right)\)

chúc bạn học tốt like mình nha

a, PT: \(CH_4+2O_2\underrightarrow{t^o}CO_2+2H_2O\)

\(2H_2+O_2\underrightarrow{t^o}2H_2O\)

Ta có: \(n_{CH_4}+n_{H_2}=\dfrac{11,2}{22,4}=0,5\left(mol\right)\left(1\right)\)

Theo PT: \(n_{H_2O}=2n_{CH_4}+n_{H_2}=\dfrac{16,2}{18}=0,9\left(mol\right)\left(2\right)\)

Từ (1) và (2) \(\Rightarrow\left\{{}\begin{matrix}n_{CH_4}=0,4\left(mol\right)\\n_{H_2}=0,1\left(mol\right)\end{matrix}\right.\)

\(\Rightarrow\left\{{}\begin{matrix}\%V_{CH_4}=\dfrac{0,4.22,4}{11,2}.100\%=80\%\\\%V_{H_2}=20\%\end{matrix}\right.\)

b, Theo PT: \(n_{CO_2}=n_{CH_4}=0,4\left(mol\right)\Rightarrow V_{CO_2}=0,4.22,4=8,96\left(l\right)\)

\(M_{CO_2}=12+16.2=44\left(\dfrac{g}{mol}\right)\)

\(n_{CO_2}=\dfrac{m}{M}=\dfrac{44}{44}=1\left(mol\right)\)

\(V_{CO_2\left(đktc\right)}=n.22,4=1.22,4=22,4\left(l\right)\)

Ta có: \(\left\{{}\begin{matrix}n_{CO_2}=\dfrac{44}{44}=1\left(mol\right)\\n_{Cl_2}=\dfrac{7,1}{71}=0,1\left(mol\right)\end{matrix}\right.\)
\(\Rightarrow V_{hh}=\left(1+0,1\right).22,4=24,64\left(lít\right)\)

a) \(n_{N_2O}=\dfrac{3,3}{44}=0,075\left(mol\right)\)

=> \(V_{N_2O}=0,075.22,4=1,68\left(l\right)\)

\(n_{CO_2}=\dfrac{95,48}{44}=2,17\left(mol\right)\)

=> \(V_{CO_2}=2,17.22,4=48,608\left(l\right)\)

\(n_{SO_2}=0,5\left(mol\right)\)

=> \(V_{SO_2}=0,5.22,4=11,2\left(l\right)\)

b) \(n_{CO_2}=0,08\left(mol\right)\)

\(n_{NH_3}=0,09\left(mol\right)\)

=> \(V_{hh}=\left(0,08+0,09\right).22,4=3,808\left(l\right)\)

c) \(n_{CO_2}=\dfrac{0,88}{44}=0,02\left(mol\right)\)

\(n_{NH_3}=\dfrac{0,68}{17}=0,04\left(mol\right)\)

=> \(V_{hh}=\left(0,02+0,04\right).22,4=1,344\left(l\right)\)

:Hãy cho biết thể tích khí ở đktc của: a)3,3 g N2O; 95,48 g CO2; 0,5 N phân tử SO2.

n _N2O=\(\dfrac{3,3}{44}=0,075mol\)

=>V_N2O=0,075.22,4=1,68l

n _CO2=\(\dfrac{95,48}{44}\)=2,17mol

=>V_CO2=2,17.22,4=48,608l
nSO2=0,5N6N=112(mol)

n _SO2=\(\dfrac{0,5N}{6N}=\dfrac{1}{12}mol\)

=>V_SO2=\(\dfrac{1}{12}.22,4=\dfrac{28}{35}\)mol

b)Hỗn hợp khí gồm: 0,08 N phân tử CO2; 0,09 N phân tử NH3. c)Hỗn hợp khí gồm: 0,88 g CO2; 0,68 g NH3.

=>n _hh=\(\dfrac{0,08N}{6N}+\dfrac{0,09N}{6N}=\dfrac{17}{600}N\)

=>V_{hhCO2, NH3}=\(\dfrac{17}{600}.22,4=\dfrac{238}{375}l\)

->n_hh=\(\dfrac{0,88}{44}+\dfrac{0,68}{17}=0,06mol\)

=>V_{hhCO2, NH3}=0,06.22,4=1,344l