Trần Hữu Tuyển Nguyễn Trần Duy Thiệu Hà Yến Nhi Toshiro Kiyoshi Hồ Hữu Phước Bèo Bé Bánh

\(m_{Fe_2O_3}=16\cdot75\%=12\left(g\right)\)

\(n_{Fe_2O_3}=\dfrac{12}{160}=0.075\left(mol\right)\)

\(n_{CuO}=16\cdot25\%=4\left(g\right)\)

\(n_{CuO}=\dfrac{4}{80}=0.05\left(mol\right)\)

\(Fe_2O_3+3H_2\underrightarrow{^{^{t^0}}}2Fe+3H_2O\)

\(CuO+H_2\underrightarrow{^{^{t^0}}}Cu+H_2O\)

\(n_{H_2}=3\cdot0.075+0.05=0.275\left(mol\right)\)

a,\(m_{Fe_2O_3}=16.75\%=12\left(g\right)\Rightarrow n_{Fe_2O_3}=\dfrac{12}{160}=0,075\left(mol\right)\)

   \(m_{CuO}=16-12=4\left(g\right)\Rightarrow n_{CuO}=\dfrac{4}{80}=0,05\left(mol\right)\)

PTHH: Fe₂O₃ + 3H₂ → 2Fe + 3H₂O

Mol:     0,075    0,225    0,15

PTHH: CuO + H₂ → Cu + H₂O

Mol:     0,05   0,05   0,05

\(\Rightarrow m_{Fe}=0,15.56=8,4\left(g\right);m_{Cu}=0,05.64=3,2\left(g\right)\)

b,\(n_{H_2}=0,225+0,05=0,275\left(mol\right)\)

\(a) n_{Fe_2O_3} = \dfrac{16.75\%}{160} = 0,075(mol)\\ n_{CuO} = \dfrac{16.25\%}{80} = 0,05(mol)\\ Fe_2O_3 + 3H_2 \xrightarrow{t^o} 2Fe + 3H_2O\\ CuO + H_2 \xrightarrow{t^o} Cu + H_2O\\ n_{Fe} = 2n_{Fe_2O_3} = 0,15(mol) \Rightarrow m_{Fe} = 0,15.56 = 8,4(gam)\\ n_{Cu} = n_{CuO} = 0,05(mol) \Rightarrow m_{Cu} = 0,05.64 = 3,2(gam)\\ b) n_{H_2} = 3n_{Fe_2O_3} + n_{CuO} = 0,075.3 + 0,05 = 0,275(mol)\\ V_{H_2} = 0,275.22,4 = 6,16(lít)\)

a, mFe2O3 = 32 . 75% = 24 (g)

nFe2O3 = 24/160 = 0,15 (mol)

mCuO = 32 - 24 = 8 (g)

nCuO = 8/80 = 0,1 (mol)

PTHH:

Fe2O3 + 3H2 -> (t°) 2Fe + 3H2O

0,15 ---> 0,45 ---> 0,3 

CuO + H2 -> (t°) Cu + H2O

0,1 ---> 0,1 ---> 0,1

mFe = 0,3 . 56 = 16,8 (g)

mCu = 64 . 0,1 = 6,4 (g)

b, nH2 = 0,1 + 0,45 = 0,55 (mol)

VH2 = 0,55 . 22,4 = 12,32 (l)

c, PTHH:

2Al + 6HCl -> 2AlCl3 + 3H2

11/30 <--- 1,1 <--- 11/30 <--- 0,55

mAl = 11/30 . 27 = 9,9 (g)

mHCl = 1,1 . 36,5 = 40,15 (g)

\(Fe_2O_3\left(a\right)+3H_2\underrightarrow{t^o}2Fe\left(2a\right)+3H_2O\)

\(FeO\left(b\right)+H_2\underrightarrow{t^o}Fe\left(b\right)+H_2O\)

\(Fe+2HCl\rightarrow FeCl_2+H_2\)

Gọi a,b lần lượt là sm của \(Fe_2O_3,FeO\) trong hh oxit

Ta có: \(\left\{{}\begin{matrix}160a+72b=15,2\\2a+b=0,2\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}a=0,05\\b=0,1\end{matrix}\right.\)

\(\Rightarrow\%m_{Fe_2O_3}=\dfrac{0,05.160.100}{15,2}\approx52,63\%\)

\(\%m_{FeO}=47,37\%\)

b) \(V_{H_2}=0,2.22,4=4,48l\).

\(\left\{{}\begin{matrix}m_{CuO}=50.20\%=10\left(g\right)\\m_{Fe_2O_3}=50-10=40\left(g\right)\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}n_{CuO}=\dfrac{10}{80}=0,125\left(mol\right)\\n_{Fe_2O_3}=\dfrac{40}{160}=0,25\left(mol\right)\end{matrix}\right.\)

PTHH:
\(CuO+H_2\xrightarrow[]{t^o}Cu+H_2O\)

0,125->0,125

\(Fe_2O_3+3H_2\xrightarrow[]{t^o}2Fe+3H_2\)

0,25--->0,75

\(\Rightarrow V_{H_2}=\left(0,75+0,125\right).22,4=18,2\left(l\right)\)

\(m_{CuO}=\dfrac{50.20}{100}=10\left(g\right)\)

\(m_{Fe_2O_3}=50-10=40\left(g\right)\)

\(n_{CuO}=\dfrac{m}{M}=\dfrac{10}{80}=0,125\left(mol\right)\)

\(n_{Fe_2O_3}=\dfrac{m}{M}=\dfrac{40}{160}=0,25\left(mol\right)\)

\(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)

\(1mol\)     \(1mol\)

\(0,125mol\) \(0,125mol\)

\(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)

\(1mol\)       \(3mol\)

\(0,25mol\)   \(0,75mol\)

\(V_{H_2}=n.22,4=\left(0,125+0,75\right).22,4=19,6\left(l\right)\)