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\(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2\left(mol\right)\)
\(n_{SO_2}=\dfrac{6,4}{64}=0,1\left(mol\right)\)
=> Vhh = (1,5 + 2,5+ 0,2 +0,1).22,4 = 96,32(l)
mhh = 1,5.32 + 2,5.28 + 0,2.2 + 6,4 = 124,8(g)
a) \(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2\left(mol\right)\); \(n_{SO_2}=\dfrac{6,4}{64}=0,1\left(mol\right)\)
V = (1,5 + 2,5 + 0,2 + 0,1).22,4 = 96,32 (l)
b) \(m_{hh}=1,5.32+2,5.28+0,2.2+6,4=124,8\left(g\right)\)
a, mX = 0,2.32 + 0,15.28 = 10,6 (g)
nX = 0,2 + 0,15 = 0,35 (mol)
=> MX = \(\dfrac{10,6}{0,35}=30,3\left(\dfrac{g}{mol}\right)\)
=> dX/kk = \(\dfrac{30,3}{29}=1,05\)
b, mY = 0,5.44 + 2.2 = 26 (g)
nY = 0,5 + 2 = 2,5 (mol)
=> MY = \(\dfrac{26}{2,5}=10,4\left(\dfrac{g}{mol}\right)\)
=> dY/O2 = \(\dfrac{10,4}{32}=0,325\)
c, mA = 17,75 + 8,4 = 26,15 (g)
nA = \(\dfrac{17,75}{71}+\dfrac{8,4}{28}=0,55\left(mol\right)\)
=> MA = \(\dfrac{26,15}{0,55}=47,6\left(\dfrac{g}{mol}\right)\)
=> dA/CO2 = \(\dfrac{47,6}{44}=1,1\)
Mình làm mẫu 3 ý đầu rồi mấy ý sau bạn tự làm nhé
\(n_{SO_2}=\dfrac{6,4}{64}=0,1mol\)
\(n_{H_2}=\dfrac{1,2.10^{23}}{6.10^{23}}=0,2mol\)
\(\Rightarrow V_{hh}=\left(0,1+0,2+1,5+2,5\right).22,4=96,32l\)
\(m_{O_2}=1,5.32=48g\)
\(m_{N_2}=2,5.28=70g\)
\(m_{H_2}=0,2.2=0,4g\)
=> \(m_{hh}=48+70+0,4+6,4==124,8g\)
mCH4 = 0,1 . 16 = 1,6 (g)
mN2 = 28 . 0,4 = 11,2 (g)
M(A) = (1,6 + 11,2)/(0,1 + 0,4) = 25,6 (g/mol)
d(A/H2) = 25,6/2 = 12,8
a) \(\overline{M}_A=5,875.2=11,75\left(g/mol\right)\)
b) Gọi số mol N2, H2 là a, b (mol)
\(\overline{M}_A=\dfrac{28a+2b}{a+b}=11,75\left(g/mol\right)\)
=> 16,25a = 9,75b
=> a = 0,6b
\(\left\{{}\begin{matrix}\%n_{N_2}=\dfrac{a}{a+b}.100\%=\dfrac{0,6b}{0,6b+b}.100\%=37,5\%\\\%n_{H_2}=\dfrac{b}{a+b}.100\%=\dfrac{b}{0,6b+b}.100\%=62,5\%\end{matrix}\right.\)
c)
1 mol hỗn hợp A chứa \(\left\{{}\begin{matrix}n_{N_2}=\dfrac{1.37,5}{100}=0,375\left(mol\right)\\n_{H_2}=\dfrac{1.62,5}{100}=0,625\left(mol\right)\end{matrix}\right.\)
\(\overline{M}_B=\dfrac{0,375.28+0,625.2+17x}{1+x}=6,4.2=12,8\left(g/mol\right)\)
=> x = 0,25 (mol)
\(M_X = \dfrac{2a.2 + a.44}{2a + a}= 16(đvC)\\ \Rightarrow d_{X/kk} = \dfrac{16}{29} = 0,552\\ M_Y = \dfrac{3b.2 + 2b.64}{3b + 2b} = 26,8(đvC)\\ \Rightarrow d_{Y/kk} = \dfrac{26,8}{29} = 0,924\\ \)
\(M_Z = \dfrac{3c.32 + 8c.28}{3c+8c} = 29,09(đcC)\\ \Rightarrow d_{Z/kk} = \dfrac{29,09}{29} = 1,003\)