a,\(PTHH:Fe_2O_3+3H_2\rightarrow2Fe+3H_2O\)
\(n_{H2}=\frac{3,36}{22,4}=0,15\left(mol\right)\)
\(\Rightarrow n_{Fe2O3}=\frac{1}{3}n_{H2}=\frac{0,15}{3}=0,05\left(mol\right)\)
\(\Rightarrow m_{Fe2O3}=0,05.160=8\left(g\right)\)
b, \(PTHH:2Al+6HCl\rightarrow2AlCl_3+3H_2\)
\(\Rightarrow n_{AlCl3}=\frac{2}{3}n_{H2}=\frac{2}{3}.0,15=0,1\left(mol\right)\)
\(\Rightarrow m_{AlCl3}=0,1.133,5=13,35\left(g\right)\)
a. Fe2O3+3H2-to>2Fe+3H2O
0,05--0,15
nH2=3.36/22.4=0.15(mol)
=>mFe2O3=0.05.160=8(gam)
b. 2Al+6HCl->2AlCl3+3H2
..........................0,1-------0,15
=>mAlCl3=0.1x133.5=13.35(gam)