# Question #95d28

This is an old problem that has exercised many chemists and educators. The correct designation of the reaction is as an example of $\text{chemical change.}$
$N a C l \left(s\right) r i g h t \le f t h a r p \infty n s N {a}^{+} \left(a q\right) + C {l}^{-} \left(a q\right)$