\[
\boxed{
\begin{aligned}
\text{a.} & \quad \text{N}_2(g) + 3\text{H}_2(g) \rightarrow 2\text{NH}_3(g) \\
\text{b.} & \quad 2\text{KClO}_3(s) \rightarrow 2\text{KCl}(s) + 3\text{O}_2(g) \\
\text{c.} & \quad 2\text{NaCl}(s) + \text{F}_2(g) \rightarrow 2\text{NaF}(s) + \text{Cl}_2(g) \\
\text{d.} & \quad \text{Pb(OH)}_2(s) + 2\text{HCl}(aq) \rightarrow 2\text{H}_2\text{O}(l) + \text{PbCl}_2(s) \\
\text{e.} & \quad \text{HNO}_3(aq) + \text{NaHCO}_3(aq) \rightarrow \text{NaNO}_3(aq) + \text{H}_2\text{O}(l) + \text{CO}_2(g) \\
\text{f.} & \quad \text{FeCl}_3(aq) + 3\text{NaOH}(aq) \rightarrow \text{Fe(OH)}_3(s) + 3\text{NaCl}(aq)
\end{aligned}
}
\]