Final answer:
Lead carbonate does not undergo sublimation. It decomposes into lead oxide and carbon dioxide upon heating.
Step-by-step explanation:
Lead carbonate does not undergo sublimation. Sublimation is the transition from the solid phase directly to the gas phase, bypassing the liquid phase. Lead carbonate, represented by the chemical formula PbCO₃, decomposes upon heating to form lead oxide (PbO) and carbon dioxide (CO₂), according to the equation:
PbCO₃(s) → PbO(s) + CO₂(g)
This reaction involves a chemical decomposition, not sublimation. Sublimation occurs when a solid substance changes directly into a gas without first becoming a liquid. Examples of substances that undergo sublimation include solid carbon dioxide (dry ice) and solid iodine.