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PTHH: \(Fe+2HCl\rightarrow FeCl_2+H_2\uparrow\)
Ta có: \(n_{H_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)
\(\Rightarrow\left\{{}\begin{matrix}n_{HCl}=0,3\left(mol\right)\\n_{FeCl_2}=n_{Fe}=0,15\left(mol\right)\end{matrix}\right.\) \(\Rightarrow\left\{{}\begin{matrix}m_{HCl}=0,3\cdot36,5=10,95\left(g\right)\\m_{Fe}=0,15\cdot56=8,4\left(g\right)\\m_{FeCl_2}=0,15\cdot127=19,05\left(g\right)\end{matrix}\right.\)
PTHH: Fe+2HCl→FeCl2+H2↑Fe+2HCl→FeCl2+H2↑
Ta có: nH2=3,3622,4=0,15(mol)nH2=3,3622,4=0,15(mol)
⇒{nHCl=0,3(mol)nFeCl2=nFe=0,15(mol)⇒{nHCl=0,3(mol)nFeCl2=nFe=0,15(mol) ⇒⎧⎪⎨⎪⎩mHCl=0,3⋅36,5=10,95(g)mFe=0,15⋅56=8,4(g)mFeCl2=0,15⋅127=19,05(g)⇒{mHCl=0,3⋅36,5=10,95(g)mFe=0,15⋅56=8,4(g)mFeCl2=0,15⋅127=19,05(g)
a) \(n_{H_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)
PTHH: Fe + 2HCl --> FeCl2 + H2
0,15<--0,3<-----0,15<--0,15
=> \(m_{Fe}=0,15.56=8,4\left(g\right)\)
=> \(m_{HCl}=0,3.36,5=10,95\left(g\right)\)
b) \(m_{FeCl_2}=0,15.127=19,05\left(g\right)\)
nH2 = \(\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
Theo pt : nFe = nH2 = 0,2(mol)
=> mFe = 0,2.56=11,2g
\(n_{Fe}=\dfrac{11,2}{56}=0,2\left(mol\right)\) ; \(n_{O_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\)
\(3Fe+2O_2\rightarrow\left(t^o\right)Fe_3O_4\)
0,2 < 0,25 ( mol )
0,2 \(\dfrac{2}{15}\) \(\dfrac{1}{15}\) ( mol )
`->` Chất dư là O2
\(m_{O_2\left(dư\right)}=\left(0,25-\dfrac{2}{15}\right).32=3,73\left(g\right)\)
\(V_{kk}=V_{O_2}.5=\dfrac{2}{15}.22,4.5=14,93\left(l\right)\)
\(m_{bôt.sắt}=\dfrac{11,2.100}{100-12}=12,72\left(g\right)\)
nFe = 46,4/56 = 29/35 (mol)
PTHH: 4Fe + 3O2 -> (t°) 2Fe2O3
Mol: 29/35 ---> 87/140 ---> 29/70
mFe2O3 = 29/70 . 160 = 464/7 (g)
Vkk = 87/140 . 5 . 22,4 = 69,6 (l)
\(P_{Fe}=V_{Fe}.D_{Fe}=100.18000=1800000\left(N\right)\)