Final answer:
The word equation for the reaction where lead is between iron and copper in the reactivity series is: Lead + Iron → Lead (II) nitrate + Copper. This reaction involves the displacement of copper by iron. The activity series helps us predict this reaction because lead is above copper in the series.
Step-by-step explanation:
The word equation for the reaction where lead is between iron and copper in the reactivity series is:
Lead + Iron → Lead (II) nitrate + Copper
This reaction involves the displacement of copper by iron. Lead combines with iron to form lead (II) nitrate, and copper is produced as a solid. The activity series helps us predict this reaction because lead is above copper in the series, indicating that lead can displace copper in a reaction.