Question

Use the activity series to predict if the following reactions will occur. If not, write NR. If the reaction does occur, write the products of the reaction and balance the equation.

Ni (s) + Pb(NO₃)₂(aq) ------>

Answer 1

In the reaction Ni(s) + Pb(NO₃)₂(aq), nickel (Ni) displaces lead (Pb) in the compound because Ni is more reactive than Pb, as indicated by the activity series. The products of the reaction are Ni(NO₃)₂(aq) and Pb(s), and the balanced equation is Ni(s) + Pb(NO₃)₂(aq) → Ni(NO₃)₂(aq) + Pb(s).

Step-by-step explanation:

When predicting if a single-replacement reaction will occur, an activity series is used to determine whether one metal will displace another metal in a compound. In the given reaction Ni(s) + Pb(NO₃)₂(aq) →, we compare the reactivity of nickel (Ni) to that of lead (Pb) according to the activity series. If Ni is above Pb in the series, Ni can replace Pb in the compound, leading to a reaction. Otherwise, there will be no reaction (NR).

According to the activity series, nickel (Ni) is more reactive than lead (Pb), which means it can displace Pb to form a new compound. Therefore, the balanced chemical equation for the reaction that will occur is:

Ni(s) + Pb(NO₃)₂(aq) → Ni(NO₃)₂(aq) + Pb(s)

To balance the equation, we realize that all components are already balanced as written, with one atom of nickel and lead and two nitrate ions each on both sides of the equation.