Write the reaction equation: HBr-Br2-FeBr3-Fe (OH) 3-Fe2O3

Let’s compose the equations:
2HBr + H2SO4 = Br2 + SO2 + 2H2O – redox reaction, bromine is released;
3Br2 + 2Fe = 2FeBr3 – compounds, an iron bromide salt was obtained;
FeBr3 + 3KOH = Fe (OH) 3 + 3KBr – ion exchange, iron hydroxide was formed in the sediment;
2Fe (OH) 3 = Fe2O3 + 3H2O – the reaction proceeds when heated, the insoluble base decomposes to iron oxide (3);
These reactions show the connection of acids, non-metals, salts, bases, oxides, which allows the synthesis of inorganic substances.