Part I. (8 points) Multiple choice questions

Question 1: A strong electrolyte is one that ____________ completely into ions in a solution.
A. reacts
B. decomposes
C. disappears
D. dissociates

Question 2: A weak electrolyte exists predominantly as ____________ in solution.
A. atoms
B. ions
C. molecules
D. isotopes

Question 3: What are the spectator ions in the reaction between $\text{KOH (aq)}$ and $\text{HNO}_3 \text{ (aq)}$?
A. $\text{K}^+$ and $\text{H}^+$
B. $\text{H}^+$ and $\text{OH}^-$
C. $\text{K}^+$ and $\text{NO}_3^-$
D. $\text{H}^+$ and $\text{NO}_3^-$

Question 4: Hydrofluoric acid, HF, is a weak acid, meaning, it does not dissociate completely in water. What is the net ionic equation for the reaction between aqueous solutions of HF and KOH?
A. $\text{HF (aq)} + \text{KOH (aq)} \rightarrow \text{H}_2\text{O (l)} + \text{K}^+ \text{(aq)} + \text{F}^- \text{(aq)}$
B. $\text{HF (aq)} + \text{OH}^- \text{(aq)} \rightarrow \text{H}_2\text{O (l)} + \text{F}^- \text{(aq)}$
C. $\text{HF (aq)} + \text{K}^+ \text{(aq)} + \text{OH}^- \text{(aq)} \rightarrow \text{H}_2\text{O (l)} + \text{KF (aq)}$
D. $\text{H}^+ \text{(aq)} + \text{OH}^- \text{(aq)} \rightarrow \text{H}_2\text{O (l)}$

Part II. (2 points) Long answer question

Question 5: Which of the following are strong electrolytes: $NaCl$ (table salt), $C_{12}H_{22}O_{11}$ (table sugar), $HI$, $NH_3$? Give an explanation for your answer.