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Difficulty: HardOxides of Carbon and Trioxocarbonate(IV) Salts

When carbon(IV) oxide gas is passed over red-hot coke in a industrial furnace, it undergoes reduction to form a poisonous gas that serves as a vital reducing agent in blast furnace operations. What is the IUPAC name of the gas produced?

Answer: Carbon(II) oxide / carbon(II) oxide / Carbon (II) oxide / carbon (II) oxide / Carbon monoxide / carbon monoxide

Answer

Carbon(II) oxide
Passing carbon(IV) oxide gas over red-hot carbon (coke) reduces CO2\text{CO}_2 to CO\text{CO}. The IUPAC name for CO\text{CO} is carbon(II) oxide, which is a major reducing agent in industrial metal extraction.

Step-by-Step Solution

1
Identify the chemical reaction between carbon(IV) oxide and carbon (coke).
The balanced chemical equation is CO2(g)+C(s)→2CO(g)\text{CO}_2(g) + \text{C}(s) \rightarrow 2\text{CO}(g).
Red-hot coke acts as a reducing agent, reducing carbon(IV) oxide to carbon(II) oxide.
2
Determine the IUPAC name of the gaseous product CO\text{CO}.
The IUPAC systematic name for CO\text{CO} is carbon(II) oxide.
The Roman numeral (II) represents the +2 oxidation state of carbon in the oxide.

Key Concept

Reduction of Carbon(IV) Oxide to Carbon(II) Oxide by hot carbon
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Topics

Oxides of Carbon and Trioxocarbonate(IV) Salts

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