A lead ore, galena, consisting mainly of lead (II) sulfide, is the principal source of lead. To obtain the lead, the ore is first heated in the air to form lead oxide: The oxide is then reduced to...

• A lead ore, galena, consisting mainly of lead (II) sulfide, is the principal source of lead. To obtain the lead, the ore is first heated in the air to form lead oxide:

The oxide is then reduced to metal with carbon

Calculate the enthalpy change for the reaction of one mole of lead(II) sulfide with oxygen and carbon, forming lead, sulfur dioxide and carbon monoxide.

Extracted text: 3 ΔΗ= -415.4 ㎢ (a) PbS(s) + žº2(g)→ PbO(s) + SO2(g)


Extracted text: (b) PbO(s)+ C(s) → Pb(s)+ CO(g) AH = 108.5 kJ