Fe + HCl ---> FeCl3 là sao :) ? FeCl2 sắt (II) clorua chứ?
\(pt:Fe+2HCl--->FeCl_2+H_2\uparrow\)
Ta có: \(n_{Fe}=\dfrac{72}{56}=\dfrac{9}{7}\left(mol\right)\)
a. Theo pt: \(n_{HCl}=2.n_{Fe}=\dfrac{2.9}{7}=\dfrac{18}{7}\left(mol\right)\)
\(\Rightarrow m_{HCl}=\dfrac{18}{7}.36,5\approx93,857\left(g\right)\)
\(\Rightarrow m_{sau.pứ}=72+93,857=165,857\left(g\right)\)
b. Theo pt: \(n_{H_2}=n_{Fe}=\dfrac{9}{7}\left(mol\right)\)
\(\Rightarrow V_{H_2}=\dfrac{9}{7}.22,4=28,8\left(lít\right)\)
\(n_{Fe}=\dfrac{72}{56}=\dfrac{9}{7}\left(mol\right)\)
\(pthh:Fe+2HCl\rightarrow FeCl_2+H_2\)
\(\dfrac{9}{7}\) \(\dfrac{9}{7}\) \(\dfrac{9}{7}\)
\(m_{FeCl_2}=\dfrac{9}{7}.127=163,285g\\
V_{H_2}=\dfrac{9}{7}.22,4=28,8l\)