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).
Best way to learn is to work on the problem on your own first ~
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When 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
Yes sir! i fully understand my mistake now. Thank you so much.
Best regards,
Jennifer
Reply
Hi 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