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)

When solutions of two ionic compounds are combined and a solid forms, the process is called

• hydration

• solvation

• dissociation

• precipitation

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

• Cu(NO₃)₂ and NaCl

• Fe(NO₃)₃ and MgCl₂

• Cu(NO₃)₂ and K₂CO₃

• CaCl₂ and NaNO₃

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Precipitation is an example of what type of reaction?

• single replacement

• double replacement

• decomposition

• composition

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

Tags

NGSS.HS-PS1-2

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^–

• 2Na⁺(aq) + S^2–(aq)

• Ag₂S(s) + 2Na⁺(aq

An aqueous solution is:

• any liquid with another compound dissolved in it.

• an ionic compound with water dissolved in it.

• water with another compound dissolved in it.

• none of the above

Which of the following compounds is SOLUBLE?

• copper carbonate

• calcium carbonate

• potassium carbonate

• strontium carbonate

Tags

NGSS.HS-PS1-1

When solid NaCl is stirred into water, which of the following is NOT true?

• Individual sodium and chloride ions are present.

• The solution will conduct electricity.

• The solution will taste salty.

• The NaCl will fail to dissociate.

Tags

NGSS.HS-PS1-2

In writing the chemical equation for a precipitation reaction, what abbreviation of the physical state must appear with one of the products?

• (s)

• (g)

• (l)

• (w)