\(n_{H_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
0,15 0,3 0,15 0,15 (mol)
\(m_{Fe}=0,15.56=8,4\left(g\right)\)
tính cm cái j b
a) \(Fe+2HCl\rightarrow FeCl_2+H_2\)
b) \(n_{H_2}=3,36:22,4=0,15\left(mol\right)=m_{Fe}\)
=> \(m_{Fe}=0,15\cdot56=8,4\left(mol\right)\)
c) \(n_{HCl}=2n_{H_2}=0,3\left(mol\right)\)
\(=>C_{M_{HCl}}=\dfrac{0.3}{0.05}=6M\)
Fe+2HCl->FeCl2+H2
0,15--0,3-----0,15--0,15
n H2=0,15 mol
=>m Fe=0,15.56=8,4g
CM HCl=\(\dfrac{0,3}{0,05}\)=6M
\(n_{H_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\\ pthh:Fe+2HCl\rightarrow FeCl_2+H_2\uparrow\)
0,15 0,3 0,15
\(m_{Fe}=0,15.56=8,4\left(g\right)\\ C_{M\left(HCl\right)}=\dfrac{0,3}{0,05}=6M\)
\(C_{M\left(FeCl_2\right)}=\dfrac{0,15}{0,05}=3M\)
\(n_{H_2}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\\
pthh:Fe+2HCl\rightarrow FeCl_2+H_2\uparrow\)
0,15 0,3 0,15 0,15
\(m_{Fe}=0,15.56=8,4\left(g\right)\\
C_{M\left(HCl\right)}=\dfrac{0,3}{0,05}=6M\\
C_{M\left(FeCl_2\right)}=\dfrac{0,15}{0,05}=3M\)