Question

Fe2O3 →Fe(NO3 ) 3 → Fe(OH) 3 → FePO4

Answer 1

Ответ:

Fe2O3 + 6HNO3 = 2Fe(NO3)3 + 3H2O

Fe(NO3)3 + 3NaOH = 3NaNO3 + Fe(OH)3

Fe(OH)3 + H3PO4 = FePO4 + H2O

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Answer 2

The series of reactions you've provided describes the conversion of iron(III) oxide (Fe2O3) into iron(III) phosphate (FePO4) through intermediate steps. Let's go through each step of the reaction series:

1. Fe2O3 → Fe(NO3)3: In this step, iron(III) oxide (Fe2O3) reacts with nitric acid (HNO3) to form iron(III) nitrate [Fe(NO3)3] and water (H2O).

2. Fe(NO3)3 → Fe(OH)3: In the second step, iron(III) nitrate [Fe(NO3)3] reacts with a base, such as sodium hydroxide (NaOH) or ammonium hydroxide (NH4OH), to form iron(III) hydroxide [Fe(OH)3] and nitric acid (HNO3) or water (H2O).

3. Fe(OH)3 → FePO4: In the final step, iron(III) hydroxide [Fe(OH)3] reacts with phosphoric acid (H3PO4) to produce iron(III) phosphate [FePO4] and water (H2O).

Overall, the complete reaction series can be summarized as follows: Fe2O3 + 6 HNO3 → 2 Fe(NO3)3 + 3 H2O 2 Fe(NO3)3 + 6 NaOH → 2 Fe(OH)3 + 6 NaNO3 2 Fe(OH)3 + 2 H3PO4 → FePO4 + 6 H2O

Please note that the actual reaction conditions, as well as the specific chemical formulas of the reactants and products, may vary depending on the experimental setup and the reactants used.