A tetravalent element forms monoxide and dioxide with oxygen. When air is passed over heated element (1273 K), producer gas is obtained. Monoxide of the element is a powerful reducing agent and reduces ferric oxide to iron. Identify the element and write formulas of its monoxide and dioxide. Write chemical equations for the formation of producer gas and reduction of ferric oxide with the monoxide.

Answers (1)

The element being discussed is Carbon which is tetravalent. It can thus produce carbon monoxide and dioxide on reaction with oxygen.

  1. 2C + O_{2} \rightarrow 2CO (As a result of the direct oxidation of carbon)

 

  1. HCOOH\rightarrow H_{2}O + CO (Dehydration of formic acid with concentrated H_{2}SO_{4} at 373k)

 

  1. C + H_{2}O \rightarrow CO + H_{2} (The mixture of CO and H_2 is known as water gas)

 

  1. 2C + O_{2} + 4N_{2} \rightarrow 2CO + 4N_{2} (The mixture of CO andN_2 is known as the producer gas)


 

Reduction Of Ferric Oxide With Monoxide


Fe_{2}O_{3} + 3CO \rightarrow \rightarrow 2Fe + 3CO_2

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