Hãy tính thể tích (ở đktc) của:
a. 6,4 g O2
b. 7,1 g Cl2
c. 6,8 g H2S
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\(a_1,m_{CaCO_3}=0,25.100=25(g)\\ a_2,m_{SO_2}=\dfrac{3,36}{22,4}.64=9,6(g)\\ a_3,m_{H_2SO_4}=\dfrac{9.10^{23}}{6.10^{23}}.98=147(g)\)
a) VSO2 = 0,5.22,4 = 11,2(l)
b) VCl2 = 3.22,4 = 67,2(l)
c) VN2 = 0,2.22,4 = 4,48(l)
a) \(V_{CO_2}=0,03.22,4=0,672\left(l\right)\)
b) \(n_{Cl_2}=\dfrac{71}{71}=1\left(mol\right)=>V_{Cl_2}=1.22,4=22,4\left(l\right)\)
c) \(n_{H_2O}=\dfrac{36}{18}=2\left(mol\right)=>V_{H_2O}=2.22,4=44,8\left(l\right)\)
d) \(n_{Cl_2}=\dfrac{11,2}{22,4}=0,5\left(mol\right)\)
ta có: nCl2=\(\frac{7,1}{71}=0,1mol\)
\(V_{Cl2}=0,1.22,4=2,24\left(l\right)\)
\(n_{CO2}=\frac{8,8}{44}=0,2\left(mol\right)\)
\(V_{CO2}=0,2.22,4=4,48\left(l\right)\)
\(n_{NO2}=\frac{4,6}{46}=0,1\left(mol\right)\)
\(V_{NO2}=0,1.22,4=2,24\left(l\right)\)
\(n_{h^2}=0,1+0,2+0,1=0,4\left(mol\right)\)
\(V_{h^2}=2,24+2,24+4,48=8,96\left(l\right)\)
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.
\(V_{H_2S}=0.75\cdot22.4=16.8\left(l\right)\)
\(V_{SO_2}=\dfrac{12.8}{64}\cdot22.4=4.48\left(l\right)\)
\(V_{O_2}=\dfrac{3.2}{32}\cdot22.4=2.24\left(l\right)\)
b.
\(n_{hh}=\dfrac{22}{44}+\dfrac{3.55}{71}+\dfrac{0.14}{28}=0.555\left(mol\right)\)
\(V_{hh}=0.555\cdot22.4=12.432\left(l\right)\)
2:
a: \(V=0.2\cdot22.4=4.48\left(lít\right)\)
b: \(n_{N_3}=\dfrac{14}{42}=\dfrac{1}{3}\left(mol\right)\)
\(V=\dfrac{1}{3}\cdot22.4=\dfrac{224}{30}\left(lít\right)\)
3:
a: \(m_{CaCO_3}=0.5\cdot\left(40+12+16\cdot3\right)=50\left(g\right)\)
b: \(n_{SO_2}=\dfrac{5.6}{22.4}=0.25\left(mol\right)\)
\(m_{SO_2}=0.25\cdot\left(32+16\cdot2\right)=16\left(g\right)\)
Câu 2:
\(\overline{NTK}_O=\dfrac{16.99,76\%+17.0,04\%+18.0,2\%}{100\%}=16,0044\left(đ.v.C\right)\\ \Rightarrow V_{O_2\left(đktc\right)}=\dfrac{6,4}{16,0044.2}.22,4\approx4,479\left(l\right)\)
\(a.V_{O_2}=\dfrac{6,4}{32}.22,4=4,48\left(lít\right)\)
\(b.V_{Cl_2}=\dfrac{7,1}{71}.22,4=2,24\left(lít\right)\)
\(c.V_{H_2S}=\dfrac{6,8}{34}.22,4=4,48\left(lít\right)\)