Ionic and net ionic equations Knowledge-Based Download PDF

Questions

1. 1.

   When a strip of solid zinc is added to an aqueous solution of copper(II) sulfate, $\text{CuSO}_4(aq)$, a single-displacement reaction takes place. Which of the following represents the balanced net ionic equation for this reaction?

   • A) $\text{Zn}(s) + \text{CuSO}_4(aq) \rightarrow \text{ZnSO}_4(aq) + \text{Cu}(s)$
   • B) $\text{Zn}^{2+}(aq) + \text{SO}_4^{2-}(aq) \rightarrow \text{ZnSO}_4(s)$
   • C) $\text{Zn}(s) + \text{Cu}^{2+}(aq) + \text{SO}_4^{2-}(aq) \rightarrow \text{Zn}^{2+}(aq) + \text{SO}_4^{2-}(aq) + \text{Cu}(s)$
   • D) $\text{Zn}(s) + \text{Cu}^{2+}(aq) \rightarrow \text{Zn}^{2+}(aq) + \text{Cu}(s)$
2. 2.

   Which of the following is the balanced net ionic equation for the reaction that occurs when aqueous hydrochloric acid, $\text{HCl}(aq)$, is mixed with aqueous sodium carbonate, $\text{Na}_2\text{CO}_3(aq)$?

   • A) $2\text{Na}^+(aq) + 2\text{Cl}^-(aq) \rightarrow 2\text{NaCl}(s)$
   • B) $2\text{H}^+(aq) + \text{CO}_3^{2-}(aq) \rightarrow \text{H}_2\text{O}(l) + \text{CO}_2(g)$
   • C) $2\text{H}^+(aq) + \text{CO}_3^{2-}(aq) \rightarrow \text{H}_2\text{CO}_3(aq)$
   • D) $\text{Na}_2\text{CO}_3(aq) + 2\text{H}^+(aq) \rightarrow 2\text{Na}^+(aq) + \text{H}_2\text{O}(l) + \text{CO}_2(g)$
3. 3.

   When aqueous solutions of lead(II) nitrate, $\text{Pb(NO}_3)_2(aq)$, and potassium iodide, $\text{KI}(aq)$, are mixed, which ions act as spectator ions in the reaction?

   • A) $\text{Pb}^{2+}(aq)$ and $\text{I}^-(aq)$
   • B) $\text{Pb}^{2+}(aq)$ and $\text{NO}_3^-(aq)$
   • C) $\text{K}^+(aq)$ and $\text{I}^-(aq)$
   • D) $\text{K}^+(aq)$ and $\text{NO}_3^-(aq)$
4. 4.

   Which of the following is the correct balanced net ionic equation for the reaction between aqueous acetic acid, $\text{CH}_3\text{COOH}(aq)$, and aqueous potassium hydroxide, $\text{KOH}(aq)$?

   • A) $\text{H}^+(aq) + \text{OH}^-(aq) \rightarrow \text{H}_2\text{O}(l)$
   • B) $\text{CH}_3\text{COOH}(aq) + \text{K}^+(aq) + \text{OH}^-(aq) \rightarrow \text{KCH}_3\text{COO}(aq) + \text{H}_2\text{O}(l)$
   • C) $\text{CH}_3\text{COOH}(aq) + \text{OH}^-(aq) \rightarrow \text{CH}_3\text{COO}^-(aq) + \text{H}_2\text{O}(l)$
   • D) $\text{CH}_3\text{COO}^-(aq) + \text{K}^+(aq) \rightarrow \text{KCH}_3\text{COO}(s)$
5. 5.

   Which of the following is the correct balanced net ionic equation for the reaction between aqueous barium nitrate, $\text{Ba(NO}_3)_2(aq)$, and aqueous sodium sulfate, $\text{Na}_2\text{SO}_4(aq)$?

   • A) $\text{Ba}^{2+}(aq) + \text{SO}_4^{2-}(aq) \rightarrow \text{BaSO}_4(s)$
   • B) $\text{Ba}^{2+}(aq) + 2\text{NO}_3^-(aq) + 2\text{Na}^+(aq) + \text{SO}_4^{2-}(aq) \rightarrow \text{BaSO}_4(s) + 2\text{Na}^+(aq) + 2\text{NO}_3^-(aq)$
   • C) $\text{Na}^+(aq) + \text{NO}_3^-(aq) \rightarrow \text{NaNO}_3(s)$
   • D) $\text{Ba(NO}_3)_2(aq) + \text{Na}_2\text{SO}_4(aq) \rightarrow \text{BaSO}_4(s) + 2\text{NaNO}_3(aq)$