Questions: Identify the solutions that will form a precipitate when mixed with aqueous sodium carbonate, Na2CO3(aq). Check all that apply. Note: Reference the Solubility of ionic compounds in water table for additional information. copper(II) nitrate, Cu(NO3)2(aq) sulfuric acid, H2SO4(aq) silver nitrate, AgNO3(aq) sodium chloride, NaCl(aq) potassium carbonate, K2CO3(aq) sodium hydroxide, NaOH(aq) None of the above

Solution Steps

To determine which solutions will form a precipitate when mixed with aqueous sodium carbonate ($\mathrm{Na}_{2} \mathrm{CO}_{3}(\mathrm{aq})$), we need to consider the solubility rules for ionic compounds. Specifically, we need to check if any of the potential products are insoluble in water.

1. Copper(II) nitrate, $\mathrm{Cu}\left(\mathrm{NO}_{3}\right)_{2}(\mathrm{aq})$:

   • When mixed with $\mathrm{Na}_{2} \mathrm{CO}_{3}$, the possible products are $\mathrm{CuCO}_{3}$ and $\mathrm{NaNO}_{3}$.
   • $\mathrm{CuCO}_{3}$ is insoluble in water.
   • Therefore, a precipitate will form.

2. Sulfuric acid, $\mathrm{H}_{2} \mathrm{SO}_{4}(\mathrm{aq})$:

   • When mixed with $\mathrm{Na}_{2} \mathrm{CO}_{3}$, the possible products are $\mathrm{Na}_{2} \mathrm{SO}_{4}$ and $\mathrm{H}_{2} \mathrm{CO}_{3}$.
   • $\mathrm{Na}_{2} \mathrm{SO}_{4}$ is soluble in water, and $\mathrm{H}_{2} \mathrm{CO}_{3}$ decomposes into $\mathrm{H}_{2}\mathrm{O}$ and $\mathrm{CO}_{2}$ gas.
   • No precipitate will form.

3. Silver nitrate, $\mathrm{AgNO}_{3}(\mathrm{aq})$:

   • When mixed with $\mathrm{Na}_{2} \mathrm{CO}_{3}$, the possible products are $\mathrm{Ag}_{2} \mathrm{CO}_{3}$ and $\mathrm{NaNO}_{3}$.
   • $\mathrm{Ag}_{2} \mathrm{CO}_{3}$ is insoluble in water.
   • Therefore, a precipitate will form.

4. Sodium chloride, $\mathrm{NaCl}(a q)$:

   • When mixed with $\mathrm{Na}_{2} \mathrm{CO}_{3}$, the possible products are $\mathrm{NaCl}$ and $\mathrm{Na}_{2} \mathrm{CO}_{3}$.
   • Both are soluble in water.
   • No precipitate will form.

5. Potassium carbonate, $\mathrm{K}_{2} \mathrm{CO}_{3}(\mathrm{aq})$:

   • When mixed with $\mathrm{Na}_{2} \mathrm{CO}_{3}$, the possible products are $\mathrm{K}_{2} \mathrm{CO}_{3}$ and $\mathrm{Na}_{2} \mathrm{CO}_{3}$.
   • Both are soluble in water.
   • No precipitate will form.

6. Sodium hydroxide, $\mathrm{NaOH}(a q)$:

   • When mixed with $\mathrm{Na}_{2} \mathrm{CO}_{3}$, the possible products are $\mathrm{NaOH}$ and $\mathrm{Na}_{2} \mathrm{CO}_{3}$.
   • Both are soluble in water.
   • No precipitate will form.

Final Answer