\(n_{FeO}=\dfrac{10,8}{72}=0,15\left(mol\right)\)
\(n_{H_2SO_4}=\dfrac{100.20\%}{100\%}:98=\dfrac{10}{49}\left(mol\right)\)
\(FeO+H_2SO_4\rightarrow FeSO_4+H_2O\)
0,15----> 0,15 -----> 0,15----->0,15
Xét \(\dfrac{10}{49}:1>\dfrac{0,15}{1}\) => axit dư.
Sau khi phản ứng kết thúc, trong dung dịch có:
\(m_{H_2SO_4}=\left(\dfrac{10}{49}-0,15\right).98=5,3\left(g\right)\)
\(m_{FeSO_4}=0,15.152=22,8\left(g\right)\)
\(m_{H_2O}=0,15.18=2,7\left(g\right)\)
\(n_{FeO}=\dfrac{10,8}{72}=0,15\left(mol\right)\)
\(n_{H_2SO_4}=\dfrac{100.20\%}{97}=\dfrac{10}{49}\left(mol\right)\)
PTHH :
FeO + H2SO4 → FeSO4 + H2O
trc p/u: 0,15 10/49
p/u : 0,15 0,15 0,15 0,15
sau : 0 0,054 0,15 0,15
\(m_{H2O}=0,15.18=2,7\left(g\right)\)
\(m_{ddFeSO_4}=10,8+100-2,7-5,292=102,808\left(g\right)\)
\(m_{H2SO4\left(dư\right)}=0,054.98=5,292\left(g\right)\)