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Which of the following is correct?

Option: 1

Fe+3CO_{2}\rightarrow Fe_{2}O_{3} +3CO


Option: 2

ZnO + CO \rightarrow Zn + CO_{2}


Option: 3

Mg + CO \rightarrow MgO + C


Option: 4

None of these


Answers (1)

best_answer

As we have learnt,

CO is used as a reducing agent in the extraction of metals from their oxides. It is able to reduce elements which have a medium to low reactivity. e.g. Zn, Fe, Sn etc

Fe_{2}O_{3}+3CO\overset{\Delta }{\rightarrow}2Fe+3CO_{2}

ZnO+CO\overset{\Delta }{\rightarrow}Zn+CO_{2}

It is not able to reduce the metals with greater reactivity e.g. K, Na, Mg, Al etc

Therefore, option (2) is correct.

Posted by

chirag

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