Litharge, PbO, is an ore that can be roasted (heated) in the presence of carbon monoxide, CO, to produce elemental lead. This is the balanced equation: PbO (s) + CO (g) - -> Pb (s) + CO_2 (g)

What is the oxidation number of lead in litharge.

+2

Explanation:

The balanced equation for the reaction is given below:

PbO (s) + CO (g) - > Pb (s) + CO2 (g)

The oxidation number of lead (Pb) in Litharge, PbO can be obtained as follow:

PbO = 0 ... (Since oxidation number of a compound is zero)

Pb + O = 0

O = - 2

Pb = ... ?

Pb - 2 = 0

Collect like terms

Pb = + 2

Therefore, the oxidation number lead (Pb) in Litharge, PbO is + 2