Reaction equations in molecular and ionic form: NH4Cl + NaOH = Na2S + HCl = H2S + FeCl2 =
July 6, 2021 | education
| 1.
NH4Cl + NaOH = NaCl + NH3 ↑ + H2O.
NH41+ + Cl1- + Na1+ + OH1- = Na1+ + OH1- + NH3 ↑ + H2O.
NH41+ + OH1- = NH3 ↑ + H2O.
2.
Na2S + 2HCl = 2NaCl + H2S↑
2Na1+ + S2- + 2H1+ + 2Сl1- = 2Na1+ + 2Cl1- + H2S↑
2H1++ S2- = H2S↑
3.
H2S + FeCl2 = FeS↓ + 2HCl.
2H1+ + S2- + Fe2+ + 2Cl1- = FeS↓ + 2H1+ + 2Cl1-.
Fe2++ S2- = FeS↓ .
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