Solubility and Double Replacement Reactions

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

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

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)

Which of the following compounds is INSOLUBLE?

• magnesium phosphate

• magnesium sulfate

• magnesium iodide

• magnesium nitrate

• none of the above

KBr

• Soluble
• Insoluble

Zinc Hydroxide

• Soluble

• Insoluble

Sodium Acetate

• soluble

• insoluble

In the laboratory, a student mixes aqueous solutions of Nickel Sulfate and Sodium hydoxide. What will the precipitate be?

• Ni(OH)₂

• Na₂SO₄

• SO₂

• no precipitate will form

Which of these is a balanced double replacement reaction?

• Al₂O_{3 (s)} + 3 CO_{2 (g)} --> Al₂(CO₃)₃

• Ba(OH)_{2 (s)} → BaO _(s) + H₂O _(aq)

• 2 KF_(aq) + Ca(NO₃)_{2 (aq)} → CaF_{2 (s)} + 2 KNO_{3 (aq)}

• 2 AgClO_{3 (aq)} + Cu _(s) --> Cu(ClO₃)_{2 (aq)} + 2 Ag _(s)