Question

In a thermite reaction, a mixture of excess aluminum powder and iron(III) oxide is ignited using magnesium ribbon. What chemical are found after the reaction is completed?

a) Water and salt
b) Carbon dioxide and sulfur dioxide
c) Iron and aluminum oxide
d) Oxygen and hydrogen

Answer 1

The chemicals found after a thermite reaction are iron and aluminum oxide, which correspond to answer c) in the question.

Step-by-step explanation:

The chemical products found after the completion of a thermite reaction, which involves a mixture of aluminum powder and iron(III) oxide ignited by magnesium ribbon, are iron (Fe) and aluminum oxide (Al2O3). Therefore, the correct answer to the question is c) Iron and aluminum oxide.

The thermite reaction is an exothermic reaction that generates a substantial amount of heat, enough to melt iron. The reaction is represented by the balanced chemical equation 2 Al(s) + Fe2O3(s) → 2 Fe(s) + Al2O3(s). This process is commonly used in applications such as railroad welding where the molten iron produced by the reaction can be used to weld metal parts together.