Write the equation of reactions with which you can carry out the chain of transformation of substances.

| August 12, 2021 | education

Write the equation of reactions with which you can carry out the chain of transformation of substances. If this is a rio, then write a complete and abbreviated one. If it is an ovre Iron oxide 2 – Sodium dixoferrate III – Iron chloride III – Iron hydroxide III – Potassium ferrate – Iron sulfate III – Iron oxide III – Iron sulfate III – Iron III-potassium hexacyanoferrate II

Fe2O3 → NaFeO2 → FeCl3 → Fe(OH)3 → K2FeO4 → Fe2(SO4)3 → Fe2O3 → Fe2(SO4)3 → Fe4[Fe(CN)6]3

1) Fe2O3 + 2NaOH → 2NaFeO2 + H2O;

2) 2NaFeO2 + 4HCl → NaCl + FeCl3 + 2H2O;

3) FeCl3 + 3KOH → Fe(OH)3↓ + 3KCl;

Fe3+ + 3Cl–  + 3K+ + 3OH– → Fe(OH)3↓ + 3K+ + 3Cl-;  

Fe3+ + 3OH– → Fe(OH)3↓;

4) 2Fe(OH)3↓ + 3Cl2 + 10KOH → 2K2FeO4 + 6KCl + 8H2O;

  +3 -2+1            0          +1-2+1     +1 +6-2       +1-1      +1 -2
2Fe(OH)3↓ + 3Cl2 + 10KOH → 2K2FeO4 + 6KCl + 8H2O;

2Cl    + 2e → 2Cl
5) 2K2FeO4 + 10H2SO4 → 2Fe2(SO4)3 + 2K2SO4 + 3O2 + 10H2O;

  +1 +6-2         +1+6-2         +3  +6-2         +1 +6-2        0            +1 -2

2K2FeO4 + 10H2SO4 → 2Fe2(SO4)3 + 2K2SO4 + 3O2 + 10H2O;

6) Fe2(SO4)3 → Fe2O3 + 3SO3;
7) Fe2O3 + 3H2SO4 → Fe2(SO4)3 + 3H2O;

8) Fe2(SO4)3 + 2K4[Fe(CN)6] → 2KFe[Fe(CN)6] + 3K2SO4;

2Fe3+  + 3SO42- + 8K+  + 2[Fe(CN)6]-4 → 2KFe[Fe(CN)6] + 6K+  + SO42-.



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