Which of the following compounds is formed when iron reacts with oxygen? (2020)

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Question: Which of the following compounds is formed when iron reacts with oxygen? (2020)

Options:

Correct Answer: Iron(III) oxide

Exam Year: 2020

Solution:

Iron reacts with oxygen to form Iron(III) oxide (Fe2O3) when sufficient oxygen is present.

Which of the following compounds is formed when iron reacts with oxygen? (2020)

Which of the following compounds is formed when iron reacts with oxygen? (2020)

Step 1: Identify the elements involved in the reaction. In this case, we have iron (Fe) and oxygen (O).
Step 2: Understand that when iron reacts with oxygen, it forms a compound.
Step 3: Determine the type of reaction. This is a combustion reaction where iron combines with oxygen.
Step 4: Know that when there is enough oxygen, iron forms Iron(III) oxide, which has the chemical formula Fe2O3.
Step 5: Conclude that the compound formed when iron reacts with oxygen is Iron(III) oxide (Fe2O3).

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