Multiple Choice
When Co(OH)3 reacts with H2SO4 in aqueous solution, which ions act as spectator ions in the complete ionic equation?
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6. Chemical Quantities & Aqueous Reactions
Complete Ionic Equations
Multiple Choice
Which of the following represents the right side of the complete ionic equation for dissolving Al(NO3)3 in water?
A
Al(NO_3)_3(s)
B
Al^{3+}(aq) + NO_3^{-}(s)
C
Al^{3+}(aq) + 3 NO_3^{-}(aq)
D
Al^{3+}(s) + 3 NO_3^{-}(aq)
Verified step by step guidance1
Step 1: Understand that when an ionic compound like aluminum nitrate, \(\text{Al(NO}_3)_3\), dissolves in water, it dissociates into its constituent ions completely because it is a strong electrolyte.
Step 2: Write the formula of aluminum nitrate and identify the ions it produces upon dissociation. Aluminum nitrate consists of one aluminum ion, \(\text{Al}^{3+}\), and three nitrate ions, \(\text{NO}_3^{-}\).
Step 3: Write the dissociation equation showing the solid aluminum nitrate dissociating into aqueous ions: \(\text{Al(NO}_3)_3(s) \rightarrow \text{Al}^{3+}(aq) + 3\ \text{NO}_3^{-}(aq)\).
Step 4: Recognize that in the complete ionic equation, all strong electrolytes are shown as ions with their correct charges and states. The aluminum ion is \(\text{Al}^{3+}(aq)\) and nitrate ions are \(\text{NO}_3^{-}(aq)\), both aqueous.
Step 5: Confirm that the correct representation of the right side of the complete ionic equation is \(\text{Al}^{3+}(aq) + 3\ \text{NO}_3^{-}(aq)\), indicating full dissociation into ions in aqueous solution.
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