1. Separate: Chemistry and Extended Only

Displacement reactions occur between metals and metal ions. Displacement reactions can be used to determine the order of reactivity of metals such as lead (Pb), nickel (Ni), and silver (Ag). The ionic equation for a displacement reaction is shown.

$Ni(s)+{Pb}^{2+}(aq)\rightarrowPb(s)+{Ni}^{2+}(aq)$

The ionic half-equations for this reaction are shown.

$Ni(s)\rightarrow{Ni}^{2+}(aq)+2{e}^{-}$

${Pb}^{2+}(aq)+2{e}^{-}\rightarrowPb(s)$

The ionic half-equations show that electrons are donated by nickel atoms and accepted by lead ions. Identify the reducing agent in the displacement reaction. Give a reason for your answer. reducing agent......................................... reason              ..........................................