Question

Fe (OH)3=>Fe2O3=>FePO4

Answer 1

1) 2 Fe(OH)³ ==(t°C)==> Fe²O³ + 3 H²O

2) Fe²O³ + 2 H³PO⁴ ===> 2 FePO⁴ ↓ + 3 H²O

Answer 2

It looks like you've provided a chemical reaction sequence involving iron (III) hydroxide ($Fe(OH)_3$), iron (III) oxide ($Fe_2O_3$), and iron (III) phosphate ($FePO_4$). Let's break down the reactions:

1. $Fe(OH)_3 \rightarrow Fe_2O_3$

   • This is a dehydration reaction. When heated, iron (III) hydroxide decomposes to form iron (III) oxide and water: $2Fe(OH)_3 \rightarrow Fe_2O_3 + 3H_2O$

2. $Fe_2O_3 \rightarrow FePO_4$

   • This is a reaction between iron (III) oxide and phosphoric acid to form iron (III) phosphate: $2Fe_2O_3 + 3H_3PO_4 \rightarrow 4FePO_4 + 3H_2O$

So, the overall reaction from $Fe(OH)_3$ to $FePO_4$ is:

$2Fe(OH)_3 \rightarrow 4FePO_4 + 3H_2O$

Keep in mind that chemical reactions must be balanced, meaning the same number of atoms of each element must appear on both sides of the equation.