\(a)Fe+2HCl\rightarrow FeCl_2+H_2\\ b)n_{HCl}=\dfrac{200.18,25\%}{100\%.36,5}=1mol\\ n_{FeCl_2}=n_{H_2}=\dfrac{1}{2}n_{HCl}=1:2=0,5mol\\ m_{FeCl_2}=0,5.127=63,5g\\ c)V_{H_2}=0,5.24,79=12,395l\)
\(C\%_{ddHCl}=\dfrac{m_{HCl}}{m_{ddHCl}}.100\%\)
\(\Leftrightarrow m_{HCl}=\dfrac{C\%_{ddHCl}.m_{ddHCl}}{100\%}\)
\(\Leftrightarrow m_{HCl}=\dfrac{18,25\%.200}{100\%}\)
\(\Rightarrow m_{ddHCl}=36,5g\)
\(n_{HCl}=\dfrac{m}{M}=\dfrac{36,5}{36,5}=1mol\)
PTHH: Fe + 2HCl \(\rightarrow\) FeCl2 + H2
TL: 1 2 1 1
mol: 0,5 \(\leftarrow\) 1 \(\rightarrow\) 0,5 \(\rightarrow\) 0,5
\(a.m_{FeCl_2}=n.M=0,5.127=63,5g\)
\(c.V_{H_2}=n.22,4=0,5.22,4=11,2l\)
