22. Group 4 - Carbon oxides

What is the most stable carbon oxide?

Carbon dioxide

Why is carbon monoxide special?

It’s the most stable compound to contain carbon in the +2 state

Why is it rare to have a carbon compound with the carbon oxidation state being +2?

Most stable state is +4

What will carbon monoxide react with?

Iron oxide and Copper (II) oxide

Write the equation for carbon monoxide reacting with iron oxide

3CO + Fe₂O₃ -> 2Fe + 3CO₂

Write the equation for carbon monoxide reacting with copper (II) oxide

CO + CuO -> Cu + CO₂

What happened to carbon when carbon monoxide reacts with iron oxide or copper (II) oxide?

+2 to +4 oxidation state

Is carbon monoxide a reducing or oxidising agent? Why?

Reducing agent as supplies electron to another element

How are different oxides classed?

Metal oxides can be classed as basic oxides, non metal oxides as acidic oxides

What is carbon dioxide classed as? Why?

Acid as it’s at the top of group 4 and is non metal

What happens when carbon dioxide reacts with water?

Produces protons and carbonic acid

Write the equation for carbon dioxide reacting with water

CO₂ + H₂O ⇌ H⁺ + HCO₃⁻