Question

Железо сожгли в атмосфере хлора. Полученное вещество растворяли в воде и обработали избытком раствора гидроксида натрия. Образовался бурый осадок,который отфильтровали и прокалили. Остаток после прокаливания растворили в йодоводородной кислоте. Напишите уравнения четырёх описанных реакций

Answer 1

2Fe+3Cl⇒2FeCl3
FeCl3+3NaOH⇒Fe(OH)3+3NaCl
Fe(OH)3⇒Fe2O3+3H2O
Fe2O3+6HI⇒I2+2FeI2+3H2O

Answer 2

Chemical Reactions

The given series of chemical reactions can be described as follows:

1. Combustion of Iron in Chlorine Atmosphere: - Equation: ``` Fe + Cl2 -> FeCl2 ``` - Source: Source 2. Dissolving the Resulting Substance in Water: - Equation: ``` FeCl2 + H2O -> FeCl2 * 4H2O ``` - Source: Source 3. Treatment with Excess Sodium Hydroxide Solution: - Equation: ``` FeCl2 * 4H2O + 2NaOH -> Fe(OH)2 + 2NaCl + 4H2O ``` - Source: Source 4. Formation of Brown Precipitate, Filtration, and Calcination: - Equation: ``` Fe(OH)2 -> FeO + H2O ``` - Source: Source 5. Dissolving the Residue in Hydroiodic Acid: - Equation: ``` FeO + 2HI -> FeI2 + H2O ``` - Source: Source These equations represent the chemical reactions involved in the described experimental process.