When we consider whether melted palmitic acid, paraffin, and sucrose can conduct electricity, it’s important to understand the nature of these substances.
Palmitic acid is a fatty acid, paraffin is a hydrocarbon, and sucrose is a type of sugar. In their solid states, none of these substances can conduct electricity because they do not have free-moving charged particles.
When melted, substances like palmitic acid and paraffin become liquid, but they still do not have the free ions or electrons necessary for electrical conductivity. They mainly consist of long hydrocarbon chains that do not ionize in solution.
On the other hand, sucrose, when dissolved in water, does not produce ions either; it remains a molecular compound. Thus, while it is in its liquid form as a solution, it also fails to conduct electricity.
In summary, all three substances—when melted—are poor conductors or unable to conduct electricity at all. Therefore, melted palmitic acid, paraffin, and sucrose cannot conduct electricity.