displacement reaction............
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combination
Al2O3 + 6HBr = 2Albr3 + 3H2O
This is an double-displacement reaction, in this case and acid-base reaction.
A combustion reaction.
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Fe2O3 + 2Al ===> Al2O3 + 2FeIn this reaction the number of moles of Al2O3 produced is dependent on the number of moles of Fe2O3 and Al that one starts with. For every 1 mole Fe2O3 and 2 moles Al, one gets 1 moles of Al2O3.
Carbon
Fe2O3 + 2Al --> Al2O3 +2 Fe The reaction is commonly known as thermite for the enormous amount of heat produced. The iron produced by the reaction is molten.
The balanced equation for this reaction is Fe2O3 + 3 H2O = 2 Fe(OH)3.
combination
The equation FeSO4 = Fe2O3 + SO2 + SO3 is not balanced. To balance it, one possible balanced equation could be: 2FeSO4 = Fe2O3 + 2SO2 + 2SO3.
The reaction is:4 Fe + 3 O2= 2 Fe2O3
The balanced chemical equation for the reaction FeS2 + 7/2 O2 → Fe2O3 + 4 SO2 is: 4 FeS2 + 11 O2 → 2 Fe2O3 + 8 SO2.
Al2O3 + 6HBr = 2Albr3 + 3H2O
2 Fe2O3 + 12 HNO3 -> 4 Fe(NO3)3 + 6 H2O
This equation is Al2O3 + 6 HCl = 2 AlCl3 + 3 H2O.