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More Food for Thoughts:
4. When iron (II) oxide is heated strongly with carbon
A) iron ions gain 2 electrons
B) carbon is reduced
C) carbon is acting as the oxidising agent
D) only carbon monoxide is formedAns: B Correct Answer is (A).
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3 Responses
sean
18|Feb|2008 1When a mixture of iron (II) oxide and carbon is heated, iron(II) oxide is
reduced to iron and carbon is oxidized to carbon dioxide. The equation as:
FeO(s) + C(s) —> 2Fe(s) + CO2(g)
Carbon is oxidized. Thus (B) is Incorrect.
Carbon is acting as the reducing agent, thus (C) is Incorrect.
Carbon Dioxide is the end-product, not Carbon monoxide, thus (D) is Incorrect.
Fe2+ has indeed gained 2 electrons (-ve charges) to form Fe(s) metal.
Therefore, correct answer should be (A).
Hope this helps.
Sean
Note:
Jennifer – The answer that you provided in the question sheet (B) is Incorrect. Pls Note.
Reply
Jen
29|Feb|2008 2Yes sir! i fully understand my mistake now. Thank you so much.
Best regards,
Jennifer
Reply
sean
04|Mar|2008 3Hi Jennifer,
It is part of the learning curve. It is alrigt to make mistakes now.
Correcting them will do you well for your GCE O Level examinations.
Cheers
Sean
Reply
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