a, \(PTHH:FeS+2HCl\rightarrow FeCl_2+H_2S\)
\(m_{FeS}=\frac{16,5.80}{100}=13,2\left(g\right)\)
\(\Rightarrow n_{FeS}=\frac{13,2}{68}\approx0,2\left(mol\right)\)
\(\Rightarrow n_{H2S}=n_{FeS}=0,2\left(mol\right)\)
\(\Rightarrow V_{H2S}=0,2.22,4=4,48\left(l\right)\)
b,\(PTHH:CuSO_4+H_2S\rightarrow CuS+H_2SO_4\)
\(n_{CuSO4}=n_{H2S}=0,2\left(mol\right)\)
\(\Rightarrow V_{CuSO4}=\frac{0,2}{0,2}=1\left(l\right)=100\left(ml\right)\)
c,\(PTHH:2H_2S+3O_2\rightarrow2H_2O+2SO_2\)
\(n_{O2}=0,3\left(mol\right)\Rightarrow V_{O2}=0,3.22,4=6,72\left(l\right)\)