Question

Viết PTHH cho chuỗi phản ứng

FeS₂ \(\rightarrow\) Fe₂O₃ \(\rightarrow\) Fe₂(SO₄)₃ \(\rightarrow\) FeCl₃ \(\rightarrow\) Fe(OH)₃

Answer 1

4FeS₂ + 11O₂ \(\underrightarrow{t^o}\) 2Fe₂O₃ + 8SO₂

Fe₂O₃ + 3H₂SO₄ \(\rightarrow\) Fe₂(SO₄)₃ + 3H₂O

Fe₂(SO₄)₃ + 3BaCl₂ \(\rightarrow\) 3BaSO₄ \(\downarrow\) + 2FeCl₃

FeCl₃ + 3NaOH \(\rightarrow\) Fe(OH)₃ \(\downarrow\)+ 3NaCl

Answer 2

Viết PTHH cho chuỗi phản ứng

FeS₂ $\to$ Fe₂O₃ $\to$ Fe₂(SO₄)₃ $\to$ FeCl₃ $\to$ Fe(OH)₃

Ta có

4FeS2 + 11O2-^t0\(\rightarrow\) 2Fe2O3 + 8SO2 \(\uparrow\)

Fe2O3 + 3H2SO4 \(\rightarrow\) Fe2(SO4)3 + 3H2O

Fe2(SO4)3 + 3BaCl2 \(\rightarrow\) 2FeCl3 + 3BaSO4 \(\downarrow\)

FeCl3 + 3NaOH \(\rightarrow\) Fe(OH)3 + 3NaCl \(\downarrow\)

Answer 3

(1) 4FeS₂ + 11O₂ -t^o-> 2Fe₂O₃ + 8SO₂

(2) Fe₂O₃ + 3H₂SO₄ -> Fe₂(SO₄)₃ + 3H₂O

(3) Fe₂(SO₄)₃ + 3BaCl₂ -> 3BaSO₄\(\downarrow\) + 2FeCl₃

(4) FeCl₃ + 3NaOH -> Fe(OH)₃ \(\downarrow\)+ 3NaCl

Answer 4

PTHH: 4FeS₂ + 11O₂ -> 2Fe₂O₃ + 8SO₂

Fe₂O₃ + 3H₂SO₄ -> Fe₂(SO₄)₃ + 3H₂O

Fe₂(SO₄)₃ + 3BaCl₂ -> 2FeCl₃ + 3BaSO₄

FeCl₃ + 3NaOH -> Fe(OH)₃ + 3NaCl