Precipitation & Net Ionic Equations Practice Quiz

When solutions of MgCO₃ and Fe₂(SO₄)₃ are combined, what precipitate(s) forms?

• MgSO₄

• neither form a precipitate

• MgSO₄ and Fe₂(CO₃)₃

• Fe₂(CO₃)₃

Which of these results in the formation of a precipitate?

• AgNO₃(aq) + NaOH(aq)→

• Ba(NO₃)₂(aq) + CaCl₂(aq)→

• NaNO₃(aq) + KOH(aq)→

• More than one of these form precipitates

What is the precipitate formed between potassium bromide and ammonium sulfide

• potassium sulfide
• ammonium bromide
• potassium ammonium
• no precipitate is formed

What are always soluble?

• Nitrates
• Phosphates
• Carbonates
• Hydroxides

What is the net ionic equation for the precipitation reaction between BaCl₂ and Na₂SO₄?

• BaCl₂(aq) + Na₂SO₄(aq) --> BaSO₄(s) + 2NaCl(aq)

• Na⁺(aq) + Cl^-(aq) --> NaCl(s)

• Ba²⁺(aq) + SO₄^2-(aq) --> BaSO₄(s)

• Ba²⁺(aq) + 2Cl^-(aq) + 2 Na⁺(aq) + SO₄^2-(aq) --> BaSO₄(s) + 2Cl^-(aq) + 2Na⁺(aq)

Which of the following pairs of solutions produces a precipitate when combined?

• Sr(NO₃)₂ and NaCl

• Fe(NO₃)₃ and MgCl₂

• Cu(NO₃)₂ and K₂CO₃

• CaCl₂ and NaNO₃

Precipitation is an example of what type of reaction?

• single replacement

• double replacement

• decomposition

• composition

Identify the spectator ion(s) in the equation: 2Ag⁺(aq) + 2NO₃^–(aq) + 2Na⁺(aq) + S^2–(aq) --> Ag₂S(s) + 2Na⁺(aq) + 2NO₃^–(aq)

• 2Ag⁺(aq) + 2NO^3–(aq)

• 2Na⁺(aq) + 2NO₃^–(aq)

• 2Na⁺(aq) + S^2–(aq)

• Ag₂S(s) + 2Na⁺(aq)

What would be the formula of the precipitate that forms when Pb(NO₃)₂ (aq) and K₂SO₄ (aq) are mixed?

• K(NO₃)₂

• PbSO₄

• PbK₂

• H₂O

What two molecules are produced in a hydrocarbon combustion reaction?

• CO₂ + NH₄
• SiO₂ + H₂O
• H₂O + CO₂
• CO₂ + H₂O₂