How many water molecules are required to react with three molecules of the iron atom to form Fe3O4?
4
The correct answer is option 4 i.e. 4.
To form Fe₃O₄ (magnetite) through a reaction involving iron and water, we consider the redox reaction that typically occurs when iron reacts with steam at high temperatures:
3Fe + 4H2O→ Fe3O4 + 4H2
Explanation:
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Reactants: 3 atoms of iron (Fe) react with 4 molecules of water (H₂O).
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Products: This forms 1 molecule of Fe₃O₄ (a mixed oxide of iron) and 4 molecules of hydrogen gas (H₂).
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This reaction is an example of a redox process where iron is both oxidized to Fe²⁺ and Fe³⁺ in Fe₃O₄ and water is reduced to hydrogen gas.
Final Answer:
4 water molecules are required to react with 3 iron atoms to form Fe₃O₄.
Similar Questions
Which type of chemical reaction involves the exchange of ions between the reactants?
Select the correct balanced equation option for the reaction Fe + H2o → Fe3o4 + H2 .
Which of the following statemnets is INCORRECT about sodium carbonate?
Which of the following is obtained upon heating ferrous sulphate?
What compound is formed when dilute hydrochloric acid is added to a beaker containing a small amount of copper oxide?
When an iron nail is dipped into a copper sulphate solution, which substance gets displaced?
- If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?
- Which of the following is NOT an example of combination reaction?
- Consider the following chemical reactions:
I: BaCl\(_2\) (aq) + Na\(_2\)SO\(_4\) (aq) → BaSO\(_4\) (s) + 2NaCl (aq)
II: Pb(NO\(_3\))\(_2\) (aq) + KI (aq) → PbI\(_2\) (s) + 2KNO\(_3\)(aq)
Which of the following correctly classifies these reactions? Select the correct balanced equation for the reaction Al2(SO4)3 + BaCl2 → AlCl3 + BaSO4 .
Important Questions from Chemical Reaction
Which of the following statement is/are true?
I. In physical change new substance is formed. substance is formed.
II. In chemical change no new substance is formed.
Which of the following cells involves similar chemical reactions?
The information not obtained from balanced chemical equation is
Oxygen cannot be obtained by which one of the following methods?
Which is the most reactive metal?
