Question

hoàn thành các sơ đồ phản ứng sau:

FeS + HCl➝A + B↑

A + NaOH ➜ H + I

H + O₂ + D ➝K

K ➝ C + D

 

Answer 1

\(FeS+2HCl\rightarrow FeCl_2+H_2S\uparrow\)

\(FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_2\downarrow+2NaCl\)

\(4Fe\left(OH\right)_2+O_2+2H_2O\rightarrow4Fe\left(OH\right)_3\)

\(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)

Answer 2

\(FeS+2HCl\rightarrow FeCl_2+H_2S\uparrow\)

\(FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_2\downarrow+2NaCl\)

\(4Fe\left(OH\right)_2+O_2+2H_2O\rightarrow4Fe\left(OH\right)_3\)

\(2Fe\left(OH\right)_3\xrightarrow[]{t^o}Fe_2O_3+3H_2O\)