Cần gấp ạ (giải chi tiết lun :")
\(a,2Al+6HCl\rightarrow2AlCl_3+3H_2\\ n_{Al}=\dfrac{5,4}{27}=0,2\left(mol\right)\\ b,n_{H_2}=\dfrac{3}{2}.0,2=0,3\left(mol\right)\Rightarrow V_{H_2\left(đktc\right)}=0,3.22,4=6,72\left(l\right)\\ c,n_{HCl}=\dfrac{6}{2}.0,2=0,6\left(mol\right)\\ m_{ddHCl}=\dfrac{0,6.36,5.100}{8,76}=250\left(g\right)\\ d,n_{AlCl_3}=n_{Al}=0,2\left(mol\right)\Rightarrow m_{AlCl_3}=133,5.0,2=26,7\left(g\right)\\ m_{ddsau}=5,4+250-0,3.2=254,8\left(g\right)\\ C\%_{ddAlCl_3}=\dfrac{26,7}{254,8}.100\approx10,479\%\)
\(n_{Al}=\dfrac{5,4}{27}=0,2mol\\ a.2Al+6HCl->2AlCl_3+3H_2\\ b.n_{H_2}=\dfrac{3}{2}\cdot0,2=0,3mol\\ V_{H_2}=0,3\cdot22,4=6,72\left(L\right)\\ c.n_{HCl}=3n_{Al}=0,6mol\\ V_{ddHCl}=\dfrac{0,6\cdot36,5\cdot100}{8,76}=250\left(g\right)\\ d.n_{AlCl_3}=n_{Al}=0,2mol\\ m_{muối}=0,2\cdot133,5=26,7\left(g\right)\\ e.m_{ddspu}=5,4+250-0,3\cdot2=254,8\left(g\right)\\ C_{\%\left(AlCl_3\right)}=\dfrac{26,7}{254,8}\cdot100\%=10,48\%\)
a) \(2Al+6HCl\rightarrow2AlCl_3+3H_2\uparrow\)
b) \(n_{Al}=\dfrac{5,4}{27}=0,2\left(mol\right)\)
\(n_{H_2}=\dfrac{0,2.3}{2}=0,3\left(mol\right)\)
\(V_{H_2\left(đktc\right)}=0,3.22,4=6,72\left(l\right)\)
c) \(n_{HCl}=\dfrac{0,2.6}{2}=0,6\left(mol\right)\)
\(m_{HCl}=0,6.36,5=21,9\left(g\right)\)
\(m_{ddHCl}=\dfrac{m_{HCl}.100\%}{C\%}=\dfrac{21,9.100\%}{8,76\%}=250\left(g\right)\)
d) \(n_{AlCl_3}=\dfrac{0,2.2}{2}=0,2\left(mol\right)\)
\(m_{AlCl_3}=0,2.133,5=26,7\left(g\right)\)
e) \(m_{ddsau}=m_{ddHCl}+m_{Al}-m_{H_2}=250+5,4-0,3.2=254,8\left(g\right)\)
\(C\%_{AlCl_3}=\dfrac{m_{AlCl_3}}{m_{ddsau}}.100\%=\dfrac{26,7}{254,8}.100\%\approx10,48\%\)