Answer
The $KF$ solution contains ions only $(K^+ \space and \space F^-)$, whereas the $HF$ solution contains molecules $(HF_{(aq)})$ and a few ions $(H^+_{(aq)} \space and \space F^-_{(aq)})$.
Work Step by Step
According to the Table 9.4, solutions of strong electrolytes contain ions only, whereas solutions of weak electrolytes contain molecules and a few ions.
