How many reactions are there?

Chemistry Level 2

Let an amount of iron (III) oxide react with abundant C O CO gas until all reactions stop.

How many chemical reactions have happened?


The answer is 3.

Tin Le by Tin Le , 15, Vietnam

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1 solution

Tin Le
Dec 17, 2020

There are 3 \boxed{3} :

  • 3 F e 2 O 3 + C O → t o 2 F e 3 O 4 + C O 2 3Fe_2O_3 + CO \overset{t^o}{\rightarrow} 2Fe_3O_4 + CO_2

  • F e 3 O 4 + C O → t o 3 F e O + C O 2 Fe_3O_4 + CO \overset{t^o}{\rightarrow} 3FeO + CO_2

  • F e O + C O → t o F e + C O 2 FeO + CO \overset{t^o}{\rightarrow} Fe + CO_2

When combined those 3 reactions, we have F e 2 O 3 + 3 C O → t o 2 F e + 3 C O 2 Fe_2O_3 + 3CO \overset{t^o}{\rightarrow} 2Fe +3CO_2 (this is only a combined reaction of 3 consecutive ones)

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